115720112 has 20 divisors (see below), whose sum is σ = 225193920. Its totient is φ = 57605568.

The previous prime is 115720103. The next prime is 115720123. The reversal of 115720112 is 211027511.

It is a happy number.

It is a super-2 number, since 2×115720112² = 26782288642585088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12128 + ... + 19455.

It is an arithmetic number, because the mean of its divisors is an integer number (11259696).

Almost surely, 2^115720112 is an apocalyptic number.

It is an amenable number.

115720112 is a deficient number, since it is larger than the sum of its proper divisors (109473808).

115720112 is a wasteful number, since it uses less digits than its factorization.

115720112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31820 (or 31814 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 115720112 is about 10757.3282928430. The cubic root of 115720112 is about 487.3073349560.

Adding to 115720112 its reverse (211027511), we get a palindrome (326747623).

The spelling of 115720112 in words is "one hundred fifteen million, seven hundred twenty thousand, one hundred twelve".