22138396 has 18 divisors (see below), whose sum is σ = 45067848. Its totient is φ = 9487800.

The previous prime is 22138381. The next prime is 22138409. The reversal of 22138396 is 69383122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56280 + ... + 56671.

Almost surely, 2^22138396 is an apocalyptic number.

It is an amenable number.

22138396 is an abundant number, since it is smaller than the sum of its proper divisors (22929452).

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

22138396 is a wasteful number, since it uses less digits than its factorization.

22138396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112969 (or 112960 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 22138396 is about 4705.1456938123. The cubic root of 22138396 is about 280.7902674635.

It can be divided in two parts, 2213 and 8396, that added together give a square (10609 = 103²).

The spelling of 22138396 in words is "twenty-two million, one hundred thirty-eight thousand, three hundred ninety-six".