220797312 has 64 divisors (see below), whose sum is σ = 592403760. Its totient is φ = 72857600.

The previous prime is 220797307. The next prime is 220797323. The reversal of 220797312 is 213797022.

It is a tau number, because it is divible by the number of its divisors (64).

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, 35938 + ... + 41630.

Almost surely, 2^220797312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220797312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296201880).

220797312 is an abundant number, since it is smaller than the sum of its proper divisors (371606448).

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

220797312 is a wasteful number, since it uses less digits than its factorization.

220797312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811 (or 5799 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 220797312 is about 14859.2500483705. The cubic root of 220797312 is about 604.4094704549.

The spelling of 220797312 in words is "two hundred twenty million, seven hundred ninety-seven thousand, three hundred twelve".