156401808 has 20 divisors (see below), whose sum is σ = 404038128. Its totient is φ = 52133920.

The previous prime is 156401807. The next prime is 156401813. The reversal of 156401808 is 808104651.

It is not an unprimeable number, because it can be changed into a prime (156401807) 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, 1629138 + ... + 1629233.

Almost surely, 2^156401808 is an apocalyptic number.

It is an amenable number.

156401808 is an abundant number, since it is smaller than the sum of its proper divisors (247636320).

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

156401808 is a wasteful number, since it uses less digits than its factorization.

156401808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258382 (or 3258376 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 156401808 is about 12506.0708457933. The cubic root of 156401808 is about 538.7830482721.

The spelling of 156401808 in words is "one hundred fifty-six million, four hundred one thousand, eight hundred eight".