220928860 has 12 divisors (see below), whose sum is σ = 463950648. Its totient is φ = 88371536.

The previous prime is 220928839. The next prime is 220928861. The reversal of 220928860 is 68829022.

It is a super-2 number, since 2×220928860² = 97619122361799200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220928861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5523202 + ... + 5523241.

It is an arithmetic number, because the mean of its divisors is an integer number (38662554).

Almost surely, 2^220928860 is an apocalyptic number.

220928860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220928860 is an abundant number, since it is smaller than the sum of its proper divisors (243021788).

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

220928860 is a wasteful number, since it uses less digits than its factorization.

220928860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046452 (or 11046450 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 220928860 is about 14863.6758576067. The cubic root of 220928860 is about 604.5294795731.

The spelling of 220928860 in words is "two hundred twenty million, nine hundred twenty-eight thousand, eight hundred sixty".