22023138 has 16 divisors (see below), whose sum is σ = 45071136. Its totient is φ = 7170240.

The previous prime is 22023091. The next prime is 22023149. The reversal of 22023138 is 83132022.

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, 42423 + ... + 42938.

It is an arithmetic number, because the mean of its divisors is an integer number (2816946).

Almost surely, 2^22023138 is an apocalyptic number.

22023138 is an abundant number, since it is smaller than the sum of its proper divisors (23047998).

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

22023138 is a wasteful number, since it uses less digits than its factorization.

22023138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85409.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 22023138 is about 4692.8816307254. The cubic root of 22023138 is about 280.3021313538.

The spelling of 22023138 in words is "twenty-two million, twenty-three thousand, one hundred thirty-eight".