220688860 has 48 divisors (see below), whose sum is σ = 530611200. Its totient is φ = 75528000.

The previous prime is 220688843. The next prime is 220688861. The reversal of 220688860 is 68886022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220688861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104091 + ... + 106189.

It is an arithmetic number, because the mean of its divisors is an integer number (11054400).

Almost surely, 2^220688860 is an apocalyptic number.

220688860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220688860 is an abundant number, since it is smaller than the sum of its proper divisors (309922340).

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

220688860 is a wasteful number, since it uses less digits than its factorization.

220688860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 220688860 is about 14855.6002907994. The cubic root of 220688860 is about 604.3104955920.

The spelling of 220688860 in words is "two hundred twenty million, six hundred eighty-eight thousand, eight hundred sixty".