220922928 has 60 divisors (see below), whose sum is σ = 639609360. Its totient is φ = 71100288.

The previous prime is 220922927. The next prime is 220922929. The reversal of 220922928 is 829229022.

220922928 = 2612² + 2613² + ... + 2643².

It is an interprime number because it is at equal distance from previous prime (220922927) and next prime (220922929).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 220922892 and 220922901.

It is not an unprimeable number, because it can be changed into a prime (220922927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22276 + ... + 30627.

It is an arithmetic number, because the mean of its divisors is an integer number (10660156).

Almost surely, 2^220922928 is an apocalyptic number.

It is an amenable number.

220922928 is an abundant number, since it is smaller than the sum of its proper divisors (418686432).

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

220922928 is a wasteful number, since it uses less digits than its factorization.

220922928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52946 (or 52937 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 220922928 is about 14863.4763093968. The cubic root of 220922928 is about 604.5240689310.

The spelling of 220922928 in words is "two hundred twenty million, nine hundred twenty-two thousand, nine hundred twenty-eight".