220628564 has 24 divisors (see below), whose sum is σ = 417654048. Its totient is φ = 101374560.

The previous prime is 220628531. The next prime is 220628623. The reversal of 220628564 is 465826022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2459 + ... + 21149.

It is an arithmetic number, because the mean of its divisors is an integer number (17402252).

Almost surely, 2^220628564 is an apocalyptic number.

It is an amenable number.

220628564 is a deficient number, since it is larger than the sum of its proper divisors (197025484).

220628564 is a wasteful number, since it uses less digits than its factorization.

220628564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18935 (or 18933 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 220628564 is about 14853.5707491498. The cubic root of 220628564 is about 604.2554545648.

The spelling of 220628564 in words is "two hundred twenty million, six hundred twenty-eight thousand, five hundred sixty-four".