156904012 has 6 divisors (see below), whose sum is σ = 274582028. Its totient is φ = 78452004.

The previous prime is 156903997. The next prime is 156904019. The reversal of 156904012 is 210409651.

It is a super-2 number, since 2×156904012² = 49237737963392288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (156904019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19612998 + ... + 19613005.

Almost surely, 2^156904012 is an apocalyptic number.

It is an amenable number.

156904012 is a deficient number, since it is larger than the sum of its proper divisors (117678016).

156904012 is a wasteful number, since it uses less digits than its factorization.

156904012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39226007 (or 39226005 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 156904012 is about 12526.1331623131. The cubic root of 156904012 is about 539.3591070626.

The spelling of 156904012 in words is "one hundred fifty-six million, nine hundred four thousand, twelve".