120791520 has 96 divisors (see below), whose sum is σ = 422785440. Its totient is φ = 32209920.

The previous prime is 120791513. The next prime is 120791533. The reversal of 120791520 is 25197021.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9661 + ... + 18300.

It is an arithmetic number, because the mean of its divisors is an integer number (4404015).

Almost surely, 2^120791520 is an apocalyptic number.

120791520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120791520 is an abundant number, since it is smaller than the sum of its proper divisors (301993920).

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

120791520 is a wasteful number, since it uses less digits than its factorization.

120791520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27985 (or 27971 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 120791520 is about 10990.5195509585. The cubic root of 120791520 is about 494.3245148210.

The spelling of 120791520 in words is "one hundred twenty million, seven hundred ninety-one thousand, five hundred twenty".