22913538 has 16 divisors (see below), whose sum is σ = 47407680. Its totient is φ = 7374416.

The previous prime is 22913519. The next prime is 22913549. The reversal of 22913538 is 83531922.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22913499 and 22913508.

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, 65670 + ... + 66017.

It is an arithmetic number, because the mean of its divisors is an integer number (2962980).

Almost surely, 2^22913538 is an apocalyptic number.

22913538 is an abundant number, since it is smaller than the sum of its proper divisors (24494142).

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

22913538 is a wasteful number, since it uses less digits than its factorization.

22913538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131721.

The product of its digits is 12960, while the sum is 33.

The square root of 22913538 is about 4786.8087490519. The cubic root of 22913538 is about 284.0298933686.

The spelling of 22913538 in words is "twenty-two million, nine hundred thirteen thousand, five hundred thirty-eight".