22664458 has 16 divisors (see below), whose sum is σ = 34509384. Its totient is φ = 11162880.

The previous prime is 22664423. The next prime is 22664459. The reversal of 22664458 is 85446622.

It can be written as a sum of positive squares in 4 ways, for example, as 17749369 + 4915089 = 4213^2 + 2217^2 .

It is not an unprimeable number, because it can be changed into a prime (22664459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49366 + ... + 49822.

Almost surely, 2^22664458 is an apocalyptic number.

22664458 is a deficient number, since it is larger than the sum of its proper divisors (11844926).

22664458 is a wasteful number, since it uses less digits than its factorization.

22664458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its digits is 92160, while the sum is 37.

The square root of 22664458 is about 4760.7203236485. The cubic root of 22664458 is about 282.9969658429.

It can be divided in two parts, 2266 and 4458, that added together give a square (6724 = 82²).

The spelling of 22664458 in words is "twenty-two million, six hundred sixty-four thousand, four hundred fifty-eight".