422624538 has 96 divisors (see below), whose sum is σ = 1068936960. Its totient is φ = 118195200.

The previous prime is 422624537. The next prime is 422624567. The reversal of 422624538 is 835426224.

422624538 is a `hidden beast` number, since 4 + 22 + 624 + 5 + 3 + 8 = 666.

It is a super-2 number, since 2×422624538² = 357223000239426888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (422624533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1845408 + ... + 1845636.

It is an arithmetic number, because the mean of its divisors is an integer number (11134760).

Almost surely, 2^422624538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422624538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (534468480).

422624538 is an abundant number, since it is smaller than the sum of its proper divisors (646312422).

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

422624538 is a wasteful number, since it uses less digits than its factorization.

422624538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 489 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 422624538 is about 20557.8339812345. The cubic root of 422624538 is about 750.4439078759.

The spelling of 422624538 in words is "four hundred twenty-two million, six hundred twenty-four thousand, five hundred thirty-eight".