220828288 has 16 divisors (see below), whose sum is σ = 439931610. Its totient is φ = 110414080.

The previous prime is 220828271. The next prime is 220828291. The reversal of 220828288 is 882828022.

It can be written as a sum of positive squares in only one way, i.e., 189557824 + 31270464 = 13768^2 + 5592^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 220828288.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862483 + ... + 862738.

Almost surely, 2^220828288 is an apocalyptic number.

It is an amenable number.

220828288 is a deficient number, since it is larger than the sum of its proper divisors (219103322).

220828288 is an equidigital number, since it uses as much as digits as its factorization.

220828288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725235 (or 1725223 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 40.

The square root of 220828288 is about 14860.2923255231. The cubic root of 220828288 is about 604.4377336497.

The spelling of 220828288 in words is "two hundred twenty million, eight hundred twenty-eight thousand, two hundred eighty-eight".