220428372004 has 9 divisors (see below), whose sum is σ = 385751294257. Its totient is φ = 110213716504.

The previous prime is 220428371893. The next prime is 220428372013. The reversal of 220428372004 is 400273824022.

The square root of 220428372004 is 469498.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 52623442404 + 167804929600 = 229398^2 + 409640^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 821622 + ... + 1056370.

Almost surely, 2^220428372004 is an apocalyptic number.

220428372004 is the 469498-th square number.

It is an amenable number.

220428372004 is a deficient number, since it is larger than the sum of its proper divisors (165322922253).

220428372004 is an frugal number, since it uses more digits than its factorization.

220428372004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469502 (or 234751 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 34.

The spelling of 220428372004 in words is "two hundred twenty billion, four hundred twenty-eight million, three hundred seventy-two thousand, four".