22979664 has 120 divisors (see below), whose sum is σ = 69831840. Its totient is φ = 7029504.

The previous prime is 22979657. The next prime is 22979713. The reversal of 22979664 is 46697922.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (326592) is a multiple of the sum of its prime divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101119 + ... + 101345.

It is an arithmetic number, because the mean of its divisors is an integer number (581932).

Almost surely, 2^22979664 is an apocalyptic number.

22979664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22979664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34915920).

22979664 is an abundant number, since it is smaller than the sum of its proper divisors (46852176).

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

22979664 is a wasteful number, since it uses less digits than its factorization.

22979664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 288 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 22979664 is about 4793.7108798925. The cubic root of 22979664 is about 284.3028575039.

The spelling of 22979664 in words is "twenty-two million, nine hundred seventy-nine thousand, six hundred sixty-four".