115317980 has 24 divisors (see below), whose sum is σ = 242857440. Its totient is φ = 45995840.

The previous prime is 115317977. The next prime is 115317989. The reversal of 115317980 is 89713511.

It is a super-2 number, since 2×115317980² = 26596473022560800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115317980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115317989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 851 + ... + 15210.

It is an arithmetic number, because the mean of its divisors is an integer number (10119060).

Almost surely, 2^115317980 is an apocalyptic number.

115317980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115317980 is an abundant number, since it is smaller than the sum of its proper divisors (127539460).

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

115317980 is a wasteful number, since it uses less digits than its factorization.

115317980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16429 (or 16427 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 115317980 is about 10738.6209542939. The cubic root of 115317980 is about 486.7422090361.

The spelling of 115317980 in words is "one hundred fifteen million, three hundred seventeen thousand, nine hundred eighty".