22299788 has 48 divisors (see below), whose sum is σ = 48082944. Its totient is φ = 8838720.

The previous prime is 22299779. The next prime is 22299793. The reversal of 22299788 is 88799222.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19406 + ... + 20522.

It is an arithmetic number, because the mean of its divisors is an integer number (1001728).

Almost surely, 2^22299788 is an apocalyptic number.

22299788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22299788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24041472).

22299788 is an abundant number, since it is smaller than the sum of its proper divisors (25783156).

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

22299788 is a wasteful number, since it uses less digits than its factorization.

22299788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182 (or 1180 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 22299788 is about 4722.2651344455. The cubic root of 22299788 is about 281.4709494717.

The spelling of 22299788 in words is "twenty-two million, two hundred ninety-nine thousand, seven hundred eighty-eight".