22318884 has 72 divisors (see below), whose sum is σ = 66579968. Its totient is φ = 6168960.

The previous prime is 22318871. The next prime is 22318889. The reversal of 22318884 is 48881322.

It is a happy number.

It is a super-3 number, since 3×22318884³ (a number of 23 digits) contains 333 as substring.

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 (22318889) 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 23 ways as a sum of consecutive naturals, for example, 6384 + ... + 9240.

Almost surely, 2^22318884 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 22318884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33289984).

22318884 is an abundant number, since it is smaller than the sum of its proper divisors (44261084).

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

22318884 is a wasteful number, since it uses less digits than its factorization.

22318884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2900 counting only the distinct ones).

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

The square root of 22318884 is about 4724.2866128126. The cubic root of 22318884 is about 281.5512706498.

The spelling of 22318884 in words is "twenty-two million, three hundred eighteen thousand, eight hundred eighty-four".