220928304 has 20 divisors (see below), whose sum is σ = 570731576. Its totient is φ = 73642752.

The previous prime is 220928297. The next prime is 220928329. The reversal of 220928304 is 403829022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2301289 + ... + 2301384.

Almost surely, 2^220928304 is an apocalyptic number.

220928304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220928304 is an abundant number, since it is smaller than the sum of its proper divisors (349803272).

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

220928304 is a wasteful number, since it uses less digits than its factorization.

220928304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602684 (or 4602678 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 220928304 is about 14863.6571542807. The cubic root of 220928304 is about 604.5289724436.

The spelling of 220928304 in words is "two hundred twenty million, nine hundred twenty-eight thousand, three hundred four".