22538372 has 12 divisors (see below), whose sum is σ = 39548880. Its totient is φ = 11238696.

The previous prime is 22538371. The next prime is 22538381. The reversal of 22538372 is 27383522.

It is not an unprimeable number, because it can be changed into a prime (22538371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5918 + ... + 8949.

It is an arithmetic number, because the mean of its divisors is an integer number (3295740).

Almost surely, 2^22538372 is an apocalyptic number.

It is an amenable number.

22538372 is a deficient number, since it is larger than the sum of its proper divisors (17010508).

22538372 is a wasteful number, since it uses less digits than its factorization.

22538372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15250 (or 15248 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 22538372 is about 4747.4595311598. The cubic root of 22538372 is about 282.4712038939.

The spelling of 22538372 in words is "twenty-two million, five hundred thirty-eight thousand, three hundred seventy-two".