157131408 has 80 divisors (see below), whose sum is σ = 491218560. Its totient is φ = 42252288.

The previous prime is 157131407. The next prime is 157131419. The reversal of 157131408 is 804131751.

It is not an unprimeable number, because it can be changed into a prime (157131407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8043 + ... + 19466.

It is an arithmetic number, because the mean of its divisors is an integer number (6140232).

Almost surely, 2^157131408 is an apocalyptic number.

It is an amenable number.

157131408 is an abundant number, since it is smaller than the sum of its proper divisors (334087152).

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

157131408 is a wasteful number, since it uses less digits than its factorization.

157131408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27544 (or 27538 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 157131408 is about 12535.2067394200. The cubic root of 157131408 is about 539.6195399638.

The spelling of 157131408 in words is "one hundred fifty-seven million, one hundred thirty-one thousand, four hundred eight".