118557220 has 48 divisors (see below), whose sum is σ = 261273600. Its totient is φ = 45127040.

The previous prime is 118557217. The next prime is 118557233. The reversal of 118557220 is 22755811.

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, 39741 + ... + 42619.

It is an arithmetic number, because the mean of its divisors is an integer number (5443200).

Almost surely, 2^118557220 is an apocalyptic number.

118557220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118557220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130636800).

118557220 is an abundant number, since it is smaller than the sum of its proper divisors (142716380).

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

118557220 is a wasteful number, since it uses less digits than its factorization.

118557220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 118557220 is about 10888.3984129899. The cubic root of 118557220 is about 491.2576605539.

The spelling of 118557220 in words is "one hundred eighteen million, five hundred fifty-seven thousand, two hundred twenty".