156904 has 16 divisors (see below), whose sum is σ = 321120. Its totient is φ = 71280.

The previous prime is 156901. The next prime is 156913. The reversal of 156904 is 409651.

It is not an unprimeable number, because it can be changed into a prime (156901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804 + ... + 979.

It is an arithmetic number, because the mean of its divisors is an integer number (20070).

2¹⁵⁶⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

156904 is an abundant number, since it is smaller than the sum of its proper divisors (164216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156904 is a wasteful number, since it uses less digits than its factorization.

156904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 156904 is about 396.1110955275. Note that the first 3 decimals coincide. The cubic root of 156904 is about 53.9359093313.

The spelling of 156904 in words is "one hundred fifty-six thousand, nine hundred four".