22638976 has 32 divisors (see below), whose sum is σ = 45465480. Its totient is φ = 11228160.

The previous prime is 22638971. The next prime is 22639031. The reversal of 22638976 is 67983622.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22638971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16891 + ... + 18181.

Almost surely, 2^22638976 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 22638976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22732740).

22638976 is an abundant number, since it is smaller than the sum of its proper divisors (22826504).

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

22638976 is a wasteful number, since it uses less digits than its factorization.

22638976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442 (or 1430 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 22638976 is about 4758.0432953053. The cubic root of 22638976 is about 282.8908667843.

The spelling of 22638976 in words is "twenty-two million, six hundred thirty-eight thousand, nine hundred seventy-six".