22538424 has 32 divisors (see below), whose sum is σ = 56488320. Its totient is φ = 7493856.

The previous prime is 22538381. The next prime is 22538431. The reversal of 22538424 is 42483522.

It is a junction number, because it is equal to n+sod(n) for n = 22538391 and 22538400.

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, 11139 + ... + 13005.

It is an arithmetic number, because the mean of its divisors is an integer number (1765260).

Almost surely, 2^22538424 is an apocalyptic number.

22538424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22538424 is an abundant number, since it is smaller than the sum of its proper divisors (33949896).

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

22538424 is a wasteful number, since it uses less digits than its factorization.

22538424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379 (or 2375 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 22538424 is about 4747.4650077699. The cubic root of 22538424 is about 282.4714211307.

The spelling of 22538424 in words is "twenty-two million, five hundred thirty-eight thousand, four hundred twenty-four".