220976028 has 72 divisors (see below), whose sum is σ = 687491168. Its totient is φ = 58278528.

The previous prime is 220976009. The next prime is 220976039. The reversal of 220976028 is 820679022.

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 = 220975983 and 220976001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30451 + ... + 37002.

Almost surely, 2^220976028 is an apocalyptic number.

220976028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

220976028 is an abundant number, since it is smaller than the sum of its proper divisors (466515140).

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

220976028 is a wasteful number, since it uses less digits than its factorization.

220976028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67483 (or 67478 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 220976028 is about 14865.2624598424. The cubic root of 220976028 is about 604.5724985755.

The spelling of 220976028 in words is "two hundred twenty million, nine hundred seventy-six thousand, twenty-eight".