22813312 has 32 divisors (see below), whose sum is σ = 46686420. Its totient is φ = 11096064.

The previous prime is 22813279. The next prime is 22813313. The reversal of 22813312 is 21331822.

It can be written as a sum of positive squares in 2 ways, for example, as 22810176 + 3136 = 4776^2 + 56^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (22813313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2328 + ... + 7144.

Almost surely, 2^22813312 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 22813312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23343210).

22813312 is an abundant number, since it is smaller than the sum of its proper divisors (23873108).

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

22813312 is an equidigital number, since it uses as much as digits as its factorization.

22813312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868 (or 4856 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 22813312 is about 4776.3282969243. The cubic root of 22813312 is about 283.6151634783.

The spelling of 22813312 in words is "twenty-two million, eight hundred thirteen thousand, three hundred twelve".