157087290 has 32 divisors (see below), whose sum is σ = 377939520. Its totient is φ = 41786624.

The previous prime is 157087267. The next prime is 157087303. The reversal of 157087290 is 92780751.

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, 6322 + ... + 18818.

It is an arithmetic number, because the mean of its divisors is an integer number (11810610).

Almost surely, 2^157087290 is an apocalyptic number.

157087290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157087290 is an abundant number, since it is smaller than the sum of its proper divisors (220852230).

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

157087290 is a wasteful number, since it uses less digits than its factorization.

157087290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12926.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 157087290 is about 12533.4468523228. The cubic root of 157087290 is about 539.5690319981.

The spelling of 157087290 in words is "one hundred fifty-seven million, eighty-seven thousand, two hundred ninety".