22788656 has 60 divisors (see below), whose sum is σ = 49476000. Its totient is φ = 10158720.

The previous prime is 22788637. The next prime is 22788659. The reversal of 22788656 is 65688722.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (22788659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152870 + ... + 153018.

It is an arithmetic number, because the mean of its divisors is an integer number (824600).

Almost surely, 2^22788656 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 22788656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24738000).

22788656 is an abundant number, since it is smaller than the sum of its proper divisors (26687344).

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

22788656 is a wasteful number, since it uses less digits than its factorization.

22788656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 241 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 22788656 is about 4773.7465370503. The cubic root of 22788656 is about 283.5129521583.

The spelling of 22788656 in words is "twenty-two million, seven hundred eighty-eight thousand, six hundred fifty-six".