220761328 has 20 divisors (see below), whose sum is σ = 428158360. Its totient is φ = 110268864.

The previous prime is 220761301. The next prime is 220761341. The reversal of 220761328 is 823167022.

It is a self number, because there is not a number n which added to its sum of digits gives 220761328.

It is a congruent number.

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, 10651 + ... + 23557.

It is an arithmetic number, because the mean of its divisors is an integer number (21407918).

Almost surely, 2^220761328 is an apocalyptic number.

It is an amenable number.

220761328 is a deficient number, since it is larger than the sum of its proper divisors (207397032).

220761328 is a wasteful number, since it uses less digits than its factorization.

220761328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13984 (or 13978 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 220761328 is about 14858.0391707654. The cubic root of 220761328 is about 604.3766345298.

The spelling of 220761328 in words is "two hundred twenty million, seven hundred sixty-one thousand, three hundred twenty-eight".