220657444 has 24 divisors (see below), whose sum is σ = 449644608. Its totient is φ = 92782560.

The previous prime is 220657441. The next prime is 220657447. The reversal of 220657444 is 444756022.

220657444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220657441) and next prime (220657447).

It is a super-2 number, since 2×220657444² = 97379415185226272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220657441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72862 + ... + 75829.

It is an arithmetic number, because the mean of its divisors is an integer number (18735192).

Almost surely, 2^220657444 is an apocalyptic number.

It is an amenable number.

220657444 is an abundant number, since it is smaller than the sum of its proper divisors (228987164).

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

220657444 is a wasteful number, since it uses less digits than its factorization.

220657444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148755 (or 148753 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 220657444 is about 14854.5428741513. The cubic root of 220657444 is about 604.2818188395.

The spelling of 220657444 in words is "two hundred twenty million, six hundred fifty-seven thousand, four hundred forty-four".