120011580 has 72 divisors (see below), whose sum is σ = 392045472. Its totient is φ = 29540736.

The previous prime is 120011561. The next prime is 120011611. The reversal of 120011580 is 85110021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23304 + ... + 27983.

It is an arithmetic number, because the mean of its divisors is an integer number (5445076).

Almost surely, 2^120011580 is an apocalyptic number.

120011580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120011580 is an abundant number, since it is smaller than the sum of its proper divisors (272033892).

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

120011580 is a wasteful number, since it uses less digits than its factorization.

120011580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51315 (or 51310 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 120011580 is about 10954.9796896206. The cubic root of 120011580 is about 493.2582803201.

The spelling of 120011580 in words is "one hundred twenty million, eleven thousand, five hundred eighty".