115312320 has 84 divisors (see below), whose sum is σ = 396636240. Its totient is φ = 30749184.

The previous prime is 115312297. The next prime is 115312361. The reversal of 115312320 is 23213511.

It is a super-2 number, since 2×115312320² = 26593862287564800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 115312293 and 115312302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17140 + ... + 22899.

It is an arithmetic number, because the mean of its divisors is an integer number (4721860).

Almost surely, 2^115312320 is an apocalyptic number.

115312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115312320 is an abundant number, since it is smaller than the sum of its proper divisors (281323920).

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

115312320 is a wasteful number, since it uses less digits than its factorization.

115312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40062 (or 40049 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 115312320 is about 10738.3574162904. The cubic root of 115312320 is about 486.7342455310.

Adding to 115312320 its reverse (23213511), we get a palindrome (138525831).

The spelling of 115312320 in words is "one hundred fifteen million, three hundred twelve thousand, three hundred twenty".