220493644 has 24 divisors (see below), whose sum is σ = 441680288. Its totient is φ = 94348800.

The previous prime is 220493639. The next prime is 220493671. The reversal of 220493644 is 446394022.

220493644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 12994 + ... + 24694.

Almost surely, 2^220493644 is an apocalyptic number.

It is an amenable number.

220493644 is an abundant number, since it is smaller than the sum of its proper divisors (221186644).

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

220493644 is a wasteful number, since it uses less digits than its factorization.

220493644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12385 (or 12383 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 220493644 is about 14849.0283857228. The cubic root of 220493644 is about 604.1322569025.

The spelling of 220493644 in words is "two hundred twenty million, four hundred ninety-three thousand, six hundred forty-four".