22788516 has 24 divisors (see below), whose sum is σ = 54177984. Its totient is φ = 7452640.

The previous prime is 22788511. The next prime is 22788527. The reversal of 22788516 is 61588722.

It is a super-2 number, since 2×22788516² = 1038632922964512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22788511) 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, 17280 + ... + 18551.

It is an arithmetic number, because the mean of its divisors is an integer number (2257416).

Almost surely, 2^22788516 is an apocalyptic number.

It is an amenable number.

22788516 is an abundant number, since it is smaller than the sum of its proper divisors (31389468).

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

22788516 is a wasteful number, since it uses less digits than its factorization.

22788516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35891 (or 35889 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 22788516 is about 4773.7318734927. The cubic root of 22788516 is about 283.5123715786.

The spelling of 22788516 in words is "twenty-two million, seven hundred eighty-eight thousand, five hundred sixteen".