115391992 has 32 divisors (see below), whose sum is σ = 221302800. Its totient is φ = 56390400.

The previous prime is 115391987. The next prime is 115391993. The reversal of 115391992 is 299193511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115391993) 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, 86692 + ... + 88012.

Almost surely, 2^115391992 is an apocalyptic number.

It is an amenable number.

115391992 is a deficient number, since it is larger than the sum of its proper divisors (105910808).

115391992 is a wasteful number, since it uses less digits than its factorization.

115391992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567 (or 1563 counting only the distinct ones).

The product of its digits is 21870, while the sum is 40.

The square root of 115391992 is about 10742.0664678636. The cubic root of 115391992 is about 486.8463184448.

It can be divided in two parts, 11539 and 1992, that added together give a palindrome (13531).

The spelling of 115391992 in words is "one hundred fifteen million, three hundred ninety-one thousand, nine hundred ninety-two".