220788444 has 48 divisors (see below), whose sum is σ = 529947936. Its totient is φ = 71500800.

The previous prime is 220788413. The next prime is 220788497. The reversal of 220788444 is 444887022.

It is a super-2 number, since 2×220788444² = 97495074007882272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137454 + ... + 139050.

It is an arithmetic number, because the mean of its divisors is an integer number (11040582).

Almost surely, 2^220788444 is an apocalyptic number.

It is an amenable number.

220788444 is an abundant number, since it is smaller than the sum of its proper divisors (309159492).

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

220788444 is a wasteful number, since it uses less digits than its factorization.

220788444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 39.

The square root of 220788444 is about 14858.9516453887. The cubic root of 220788444 is about 604.4013786068.

The spelling of 220788444 in words is "two hundred twenty million, seven hundred eighty-eight thousand, four hundred forty-four".