220902920 has 64 divisors (see below), whose sum is σ = 570585600. Its totient is φ = 75398400.

The previous prime is 220902917. The next prime is 220902937. The reversal of 220902920 is 29209022.

It is a self number, because there is not a number n which added to its sum of digits gives 220902920.

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, 65270 + ... + 68570.

It is an arithmetic number, because the mean of its divisors is an integer number (8915400).

Almost surely, 2^220902920 is an apocalyptic number.

220902920 is a gapful number since it is divisible by the number (20) 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 220902920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285292800).

220902920 is an abundant number, since it is smaller than the sum of its proper divisors (349682680).

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

220902920 is a wasteful number, since it uses less digits than its factorization.

220902920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558 (or 3554 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 220902920 is about 14862.8032349217. The cubic root of 220902920 is about 604.5058187011.

The spelling of 220902920 in words is "two hundred twenty million, nine hundred two thousand, nine hundred twenty".