22790688 has 48 divisors (see below), whose sum is σ = 61227936. Its totient is φ = 7418880.

The previous prime is 22790687. The next prime is 22790737. The reversal of 22790688 is 88609722.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (22790681) 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, 1368 + ... + 6888.

It is an arithmetic number, because the mean of its divisors is an integer number (1275582).

Almost surely, 2^22790688 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 22790688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30613968).

22790688 is an abundant number, since it is smaller than the sum of its proper divisors (38437248).

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

22790688 is a wasteful number, since it uses less digits than its factorization.

22790688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577 (or 5569 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 22790688 is about 4773.9593630445. The cubic root of 22790688 is about 283.5213785906.

The spelling of 22790688 in words is "twenty-two million, seven hundred ninety thousand, six hundred eighty-eight".