13156804 has 18 divisors (see below), whose sum is σ = 23540510. Its totient is φ = 6434112.

The previous prime is 13156799. The next prime is 13156831. The reversal of 13156804 is 40865131.

It can be written as a sum of positive squares in only one way, i.e., 9622404 + 3534400 = 3102^2 + 1880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8092 + ... + 9580.

Almost surely, 2^13156804 is an apocalyptic number.

It is an amenable number.

13156804 is a deficient number, since it is larger than the sum of its proper divisors (10383706).

13156804 is a wasteful number, since it uses less digits than its factorization.

13156804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 13156804 is about 3627.2308997361. The cubic root of 13156804 is about 236.0750742674.

The spelling of 13156804 in words is "thirteen million, one hundred fifty-six thousand, eight hundred four".