22290538 has 8 divisors (see below), whose sum is σ = 33531588. Its totient is φ = 11113344.

The previous prime is 22290529. The next prime is 22290551. The reversal of 22290538 is 83509222.

It can be written as a sum of positive squares in 2 ways, for example, as 22155849 + 134689 = 4707^2 + 367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15081 + ... + 16492.

Almost surely, 2^22290538 is an apocalyptic number.

22290538 is a deficient number, since it is larger than the sum of its proper divisors (11241050).

22290538 is a wasteful number, since it uses less digits than its factorization.

22290538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31928.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 22290538 is about 4721.2856299953. The cubic root of 22290538 is about 281.4320258377.

The spelling of 22290538 in words is "twenty-two million, two hundred ninety thousand, five hundred thirty-eight".