22537138 has 16 divisors (see below), whose sum is σ = 38548440. Its totient is φ = 9789696.

The previous prime is 22537133. The next prime is 22537153. The reversal of 22537138 is 83173522.

It can be written as a sum of positive squares in 4 ways, for example, as 18722929 + 3814209 = 4327^2 + 1953^2 .

It is not an unprimeable number, because it can be changed into a prime (22537133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25053 + ... + 25936.

Almost surely, 2^22537138 is an apocalyptic number.

22537138 is a deficient number, since it is larger than the sum of its proper divisors (16011302).

22537138 is a wasteful number, since it uses less digits than its factorization.

22537138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51021.

The product of its digits is 10080, while the sum is 31.

The square root of 22537138 is about 4747.3295651345. The cubic root of 22537138 is about 282.4660485995.

The spelling of 22537138 in words is "twenty-two million, five hundred thirty-seven thousand, one hundred thirty-eight".