13071904 has 12 divisors (see below), whose sum is σ = 25735374. Its totient is φ = 6535936.

The previous prime is 13071899. The next prime is 13071911. The reversal of 13071904 is 40917031.

It can be written as a sum of positive squares in only one way, i.e., 10575504 + 2496400 = 3252^2 + 1580^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204217 + ... + 204280.

Almost surely, 2^13071904 is an apocalyptic number.

It is an amenable number.

13071904 is a deficient number, since it is larger than the sum of its proper divisors (12663470).

13071904 is an equidigital number, since it uses as much as digits as its factorization.

13071904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408507 (or 408499 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 13071904 is about 3615.5088161972. The cubic root of 13071904 is about 235.5661857207.

Adding to 13071904 its reverse (40917031), we get a palindrome (53988935).

The spelling of 13071904 in words is "thirteen million, seventy-one thousand, nine hundred four".