22990688 has 48 divisors (see below), whose sum is σ = 52091424. Its totient is φ = 9784320.

The previous prime is 22990687. The next prime is 22990691. The reversal of 22990688 is 88609922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22990687) 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, 43868 + ... + 44388.

It is an arithmetic number, because the mean of its divisors is an integer number (1085238).

Almost surely, 2^22990688 is an apocalyptic number.

22990688 is a gapful number since it is divisible by the number (28) 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 22990688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26045712).

22990688 is an abundant number, since it is smaller than the sum of its proper divisors (29100736).

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

22990688 is a wasteful number, since it uses less digits than its factorization.

22990688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 22990688 is about 4794.8605819148. The cubic root of 22990688 is about 284.3483129648.

The spelling of 22990688 in words is "twenty-two million, nine hundred ninety thousand, six hundred eighty-eight".