22164544 has 14 divisors (see below), whose sum is σ = 43982894. Its totient is φ = 11082240.

The previous prime is 22164511. The next prime is 22164553. The reversal of 22164544 is 44546122.

It can be written as a sum of positive squares in only one way, i.e., 21902400 + 262144 = 4680^2 + 512^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173097 + ... + 173224.

Almost surely, 2^22164544 is an apocalyptic number.

It is an amenable number.

22164544 is a deficient number, since it is larger than the sum of its proper divisors (21818350).

22164544 is an equidigital number, since it uses as much as digits as its factorization.

22164544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346333 (or 346323 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 22164544 is about 4707.9235337885. The cubic root of 22164544 is about 280.9007725363.

The spelling of 22164544 in words is "twenty-two million, one hundred sixty-four thousand, five hundred forty-four".