242664220 has 24 divisors (see below), whose sum is σ = 510010704. Its totient is φ = 96986496.

The previous prime is 242664211. The next prime is 242664251. The reversal of 242664220 is 22466242.

It is a congruent number.

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, 24427 + ... + 32893.

It is an arithmetic number, because the mean of its divisors is an integer number (21250446).

Almost surely, 2^242664220 is an apocalyptic number.

242664220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242664220 is an abundant number, since it is smaller than the sum of its proper divisors (267346484).

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

242664220 is a wasteful number, since it uses less digits than its factorization.

242664220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909 (or 9907 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 242664220 is about 15577.6833964489. The cubic root of 242664220 is about 623.7375862151.

The spelling of 242664220 in words is "two hundred forty-two million, six hundred sixty-four thousand, two hundred twenty".