22494164 has 48 divisors (see below), whose sum is σ = 49459200. Its totient is φ = 8696160.

The previous prime is 22494151. The next prime is 22494181. The reversal of 22494164 is 46149422.

It is a self number, because there is not a number n which added to its sum of digits gives 22494164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61109 + ... + 61475.

It is an arithmetic number, because the mean of its divisors is an integer number (1030400).

Almost surely, 2^22494164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22494164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24729600).

22494164 is an abundant number, since it is smaller than the sum of its proper divisors (26965036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22494164 is a wasteful number, since it uses less digits than its factorization.

22494164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 586 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 22494164 is about 4742.8012819430. The cubic root of 22494164 is about 282.2863981703.

The spelling of 22494164 in words is "twenty-two million, four hundred ninety-four thousand, one hundred sixty-four".