22279232 has 28 divisors (see below), whose sum is σ = 44842176. Its totient is φ = 10980480.

The previous prime is 22279199. The next prime is 22279247. The reversal of 22279232 is 23297222.

It is a junction number, because it is equal to n+sod(n) for n = 22279195 and 22279204.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2093 + ... + 6995.

Almost surely, 2^22279232 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 22279232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22421088).

22279232 is an abundant number, since it is smaller than the sum of its proper divisors (22562944).

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

22279232 is an equidigital number, since it uses as much as digits as its factorization.

22279232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986 (or 4976 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 22279232 is about 4720.0881347704. The cubic root of 22279232 is about 281.3844360099.

The spelling of 22279232 in words is "twenty-two million, two hundred seventy-nine thousand, two hundred thirty-two".