22664392 has 8 divisors (see below), whose sum is σ = 42495750. Its totient is φ = 11332192.

The previous prime is 22664371. The next prime is 22664393. The reversal of 22664392 is 29346622.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22524516 + 139876 = 4746^2 + 374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (22664393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1416517 + ... + 1416532.

Almost surely, 2^22664392 is an apocalyptic number.

It is an amenable number.

22664392 is a deficient number, since it is larger than the sum of its proper divisors (19831358).

22664392 is a wasteful number, since it uses less digits than its factorization.

22664392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833055 (or 2833051 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 22664392 is about 4760.7133919193. The cubic root of 22664392 is about 282.9966911424.

The spelling of 22664392 in words is "twenty-two million, six hundred sixty-four thousand, three hundred ninety-two".