22716538 has 16 divisors (see below), whose sum is σ = 37112040. Its totient is φ = 10365696.

The previous prime is 22716523. The next prime is 22716559. The reversal of 22716538 is 83561722.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19245769 + 3470769 = 4387^2 + 1863^2 .

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, 2595 + ... + 7222.

Almost surely, 2^22716538 is an apocalyptic number.

22716538 is a deficient number, since it is larger than the sum of its proper divisors (14395502).

22716538 is a wasteful number, since it uses less digits than its factorization.

22716538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9921.

The product of its digits is 20160, while the sum is 34.

The square root of 22716538 is about 4766.1869455572. The cubic root of 22716538 is about 283.2135635268.

The spelling of 22716538 in words is "twenty-two million, seven hundred sixteen thousand, five hundred thirty-eight".