120556280 has 32 divisors (see below), whose sum is σ = 292118400. Its totient is φ = 44512896.

The previous prime is 120556279. The next prime is 120556283. The reversal of 120556280 is 82655021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120556283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115400 + ... + 116439.

It is an arithmetic number, because the mean of its divisors is an integer number (9128700).

Almost surely, 2^120556280 is an apocalyptic number.

120556280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120556280 is an abundant number, since it is smaller than the sum of its proper divisors (171562120).

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

120556280 is a wasteful number, since it uses less digits than its factorization.

120556280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231863 (or 231859 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 120556280 is about 10979.8123845538. The cubic root of 120556280 is about 494.0034093095.

The spelling of 120556280 in words is "one hundred twenty million, five hundred fifty-six thousand, two hundred eighty".