115157220 has 24 divisors (see below), whose sum is σ = 322440384. Its totient is φ = 30708576.

The previous prime is 115157213. The next prime is 115157239. The reversal of 115157220 is 22751511.

It is a super-2 number, since 2×115157220² = 26522370636256800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959584 + ... + 959703.

It is an arithmetic number, because the mean of its divisors is an integer number (13435016).

Almost surely, 2^115157220 is an apocalyptic number.

115157220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115157220 is an abundant number, since it is smaller than the sum of its proper divisors (207283164).

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

115157220 is a wasteful number, since it uses less digits than its factorization.

115157220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919299 (or 1919297 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 115157220 is about 10731.1332113622. The cubic root of 115157220 is about 486.5159214939.

The spelling of 115157220 in words is "one hundred fifteen million, one hundred fifty-seven thousand, two hundred twenty".