472822638 has 48 divisors (see below), whose sum is σ = 1041538176. Its totient is φ = 142805520.

The previous prime is 472822627. The next prime is 472822687. The reversal of 472822638 is 836228274.

It is a super-2 number, since 2×472822638² = 447122494010558088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 472822638.

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 23 ways as a sum of consecutive naturals, for example, 45073 + ... + 54563.

It is an arithmetic number, because the mean of its divisors is an integer number (21698712).

Almost surely, 2^472822638 is an apocalyptic number.

472822638 is an abundant number, since it is smaller than the sum of its proper divisors (568715538).

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

472822638 is a wasteful number, since it uses less digits than its factorization.

472822638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9557 (or 9538 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 472822638 is about 21744.4852318927. The cubic root of 472822638 is about 779.0513549329.

The spelling of 472822638 in words is "four hundred seventy-two million, eight hundred twenty-two thousand, six hundred thirty-eight".