115128712 has 8 divisors (see below), whose sum is σ = 215866350. Its totient is φ = 57564352.

The previous prime is 115128707. The next prime is 115128737. The reversal of 115128712 is 217821511.

It can be written as a sum of positive squares in only one way, i.e., 105801796 + 9326916 = 10286^2 + 3054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7195537 + ... + 7195552.

Almost surely, 2^115128712 is an apocalyptic number.

It is an amenable number.

115128712 is a deficient number, since it is larger than the sum of its proper divisors (100737638).

115128712 is a wasteful number, since it uses less digits than its factorization.

115128712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14391095 (or 14391091 counting only the distinct ones).

The product of its digits is 1120, while the sum is 28.

The square root of 115128712 is about 10729.8048444508. The cubic root of 115128712 is about 486.4757713393.

The spelling of 115128712 in words is "one hundred fifteen million, one hundred twenty-eight thousand, seven hundred twelve".