The Number

1540

One Thousand Five Hundred and Forty

Nearby Numbers

Positive, nonzero integers within three units

1537
One Thousand Five Hundred and Thirty-Seven
1538
One Thousand Five Hundred and Thirty-Eight
1539
One Thousand Five Hundred and Thirty-Nine
1541
One Thousand Five Hundred and Forty-One
1542
One Thousand Five Hundred and Forty-Two
1543
One Thousand Five Hundred and Forty-Three

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

1.540e3

Reciprocal

A number multiplied with its reciprocal is one.

0.0006493506493506494

The reciprocal of 1540.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 1540 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

One thousand five hundred and forty is a composite number with 24 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

One thousand five hundred and forty is a composite number with 24 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number one thousand five hundred and forty has the following 4 prime factors:

2
Two
5
Five
7
Seven
11
Eleven

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

22 · 51 · 71 · 111 = 1540

Base Conversions

The number one thousand five hundred and forty in 35 different bases