220831328 has 24 divisors (see below), whose sum is σ = 435101688. Its totient is φ = 110329344.

The previous prime is 220831327. The next prime is 220831363. The reversal of 220831328 is 823138022.

It is a self number, because there is not a number n which added to its sum of digits gives 220831328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220831327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65000 + ... + 68312.

It is an arithmetic number, because the mean of its divisors is an integer number (18129237).

Almost surely, 2^220831328 is an apocalyptic number.

It is an amenable number.

220831328 is a deficient number, since it is larger than the sum of its proper divisors (214270360).

220831328 is a wasteful number, since it uses less digits than its factorization.

220831328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406 (or 5398 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 220831328 is about 14860.3946111804. The cubic root of 220831328 is about 604.4405072712.

The spelling of 220831328 in words is "two hundred twenty million, eight hundred thirty-one thousand, three hundred twenty-eight".