22256688 has 80 divisors (see below), whose sum is σ = 60710400. Its totient is φ = 7015680.

The previous prime is 22256687. The next prime is 22256693. The reversal of 22256688 is 88665222.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22256683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81993 + ... + 82263.

It is an arithmetic number, because the mean of its divisors is an integer number (758880).

Almost surely, 2^22256688 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 22256688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30355200).

22256688 is an abundant number, since it is smaller than the sum of its proper divisors (38453712).

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

22256688 is a wasteful number, since it uses less digits than its factorization.

22256688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 364 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 22256688 is about 4717.6994393454. The cubic root of 22256688 is about 281.2894945031.

The spelling of 22256688 in words is "twenty-two million, two hundred fifty-six thousand, six hundred eighty-eight".