115211972 has 12 divisors (see below), whose sum is σ = 212232720. Its totient is φ = 54574056.

The previous prime is 115211963. The next prime is 115212017. The reversal of 115211972 is 279112511.

It is a happy number.

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, 757898 + ... + 758049.

It is an arithmetic number, because the mean of its divisors is an integer number (17686060).

Almost surely, 2^115211972 is an apocalyptic number.

It is an amenable number.

115211972 is a deficient number, since it is larger than the sum of its proper divisors (97020748).

115211972 is a wasteful number, since it uses less digits than its factorization.

115211972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515970 (or 1515968 counting only the distinct ones).

The product of its digits is 1260, while the sum is 29.

The square root of 115211972 is about 10733.6839901313. The cubic root of 115211972 is about 486.5930146459.

The spelling of 115211972 in words is "one hundred fifteen million, two hundred eleven thousand, nine hundred seventy-two".