422551220 has 48 divisors (see below), whose sum is σ = 1092137088. Its totient is φ = 133729920.

The previous prime is 422551219. The next prime is 422551247. The reversal of 422551220 is 22155224.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114266 + ... + 117905.

It is an arithmetic number, because the mean of its divisors is an integer number (22752856).

Almost surely, 2^422551220 is an apocalyptic number.

It is an amenable number.

422551220 is an abundant number, since it is smaller than the sum of its proper divisors (669585868).

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

422551220 is a wasteful number, since it uses less digits than its factorization.

422551220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232200 (or 232198 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 422551220 is about 20556.0506907334. The cubic root of 422551220 is about 750.4005090482.

The spelling of 422551220 in words is "four hundred twenty-two million, five hundred fifty-one thousand, two hundred twenty".