157215864 has 64 divisors (see below), whose sum is σ = 448187040. Its totient is φ = 45527040.

The previous prime is 157215859. The next prime is 157215871. The reversal of 157215864 is 468512751.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9517 + ... + 20124.

Almost surely, 2^157215864 is an apocalyptic number.

It is an amenable number.

157215864 is an abundant number, since it is smaller than the sum of its proper divisors (290971176).

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

157215864 is a wasteful number, since it uses less digits than its factorization.

157215864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29680 (or 29676 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 157215864 is about 12538.5750386557. The cubic root of 157215864 is about 539.7162020416.

The spelling of 157215864 in words is "one hundred fifty-seven million, two hundred fifteen thousand, eight hundred sixty-four".