22068288 has 196 divisors, whose sum is σ = 73292208. Its totient is φ = 6531840.

The previous prime is 22068287. The next prime is 22068307. The reversal of 22068288 is 88286022.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22068283) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 513195 + ... + 513237.

Almost surely, 2^22068288 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 22068288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36646104).

22068288 is an abundant number, since it is smaller than the sum of its proper divisors (51223920).

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

22068288 is an equidigital number, since it uses as much as digits as its factorization.

22068288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 22068288 is about 4697.6896449212. The cubic root of 22068288 is about 280.4935512830.

The spelling of 22068288 in words is "twenty-two million, sixty-eight thousand, two hundred eighty-eight".