115012720 has 20 divisors (see below), whose sum is σ = 267404760. Its totient is φ = 46005056.

The previous prime is 115012717. The next prime is 115012721. The reversal of 115012720 is 27210511.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115012721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718750 + ... + 718909.

It is an arithmetic number, because the mean of its divisors is an integer number (13370238).

Almost surely, 2^115012720 is an apocalyptic number.

115012720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115012720 is an abundant number, since it is smaller than the sum of its proper divisors (152392040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115012720 is a wasteful number, since it uses less digits than its factorization.

115012720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437672 (or 1437666 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 115012720 is about 10724.3983514228. The cubic root of 115012720 is about 486.3123419120.

The spelling of 115012720 in words is "one hundred fifteen million, twelve thousand, seven hundred twenty".