115709992 has 8 divisors (see below), whose sum is σ = 216956250. Its totient is φ = 57854992.

The previous prime is 115709977. The next prime is 115709999. The reversal of 115709992 is 299907511.

It can be written as a sum of positive squares in only one way, i.e., 103917636 + 11792356 = 10194^2 + 3434^2 .

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

It is not an unprimeable number, because it can be changed into a prime (115709999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7231867 + ... + 7231882.

Almost surely, 2^115709992 is an apocalyptic number.

It is an amenable number.

115709992 is a deficient number, since it is larger than the sum of its proper divisors (101246258).

115709992 is a wasteful number, since it uses less digits than its factorization.

115709992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14463755 (or 14463751 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 43.

The square root of 115709992 is about 10756.8579055410. The cubic root of 115709992 is about 487.2931291454.

The spelling of 115709992 in words is "one hundred fifteen million, seven hundred nine thousand, nine hundred ninety-two".