115639012 has 12 divisors (see below), whose sum is σ = 203500080. Its totient is φ = 57496136.

The previous prime is 115639001. The next prime is 115639031. The reversal of 115639012 is 210936511.

It is a super-2 number, since 2×115639012² = 26744762192672288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80038 + ... + 81469.

It is an arithmetic number, because the mean of its divisors is an integer number (16958340).

Almost surely, 2^115639012 is an apocalyptic number.

It is an amenable number.

115639012 is a deficient number, since it is larger than the sum of its proper divisors (87861068).

115639012 is a wasteful number, since it uses less digits than its factorization.

115639012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161690 (or 161688 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 115639012 is about 10753.5581088308. The cubic root of 115639012 is about 487.1934686621.

The spelling of 115639012 in words is "one hundred fifteen million, six hundred thirty-nine thousand, twelve".