120616520 has 32 divisors (see below), whose sum is σ = 275841720. Its totient is φ = 47454720.

The previous prime is 120616477. The next prime is 120616537. The reversal of 120616520 is 25616021.

It can be written as a sum of positive squares in 4 ways, for example, as 73034116 + 47582404 = 8546^2 + 6898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22277 + ... + 27156.

Almost surely, 2^120616520 is an apocalyptic number.

120616520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120616520 is an abundant number, since it is smaller than the sum of its proper divisors (155225200).

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

120616520 is a wasteful number, since it uses less digits than its factorization.

120616520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49505 (or 49501 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 120616520 is about 10982.5552582266. Note that the first 3 decimals coincide. The cubic root of 120616520 is about 494.0856774145.

It can be divided in two parts, 12061 and 6520, that added together give a palindrome (18581).

The spelling of 120616520 in words is "one hundred twenty million, six hundred sixteen thousand, five hundred twenty".