22664544 has 96 divisors (see below), whose sum is σ = 70398720. Its totient is φ = 6246912.

The previous prime is 22664533. The next prime is 22664567. The reversal of 22664544 is 44546622.

It is a tau number, because it is divible by the number of its divisors (96).

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, 18907 + ... + 20069.

It is an arithmetic number, because the mean of its divisors is an integer number (733320).

Almost surely, 2^22664544 is an apocalyptic number.

22664544 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 22664544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35199360).

22664544 is an abundant number, since it is smaller than the sum of its proper divisors (47734176).

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

22664544 is a wasteful number, since it uses less digits than its factorization.

22664544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1204 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 22664544 is about 4760.7293558866. The cubic root of 22664544 is about 282.9973237853.

The spelling of 22664544 in words is "twenty-two million, six hundred sixty-four thousand, five hundred forty-four".