22320912 has 20 divisors (see below), whose sum is σ = 57662480. Its totient is φ = 7440288.

The previous prime is 22320901. The next prime is 22320917. The reversal of 22320912 is 21902322.

It is a super-3 number, since 3×22320912³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (22320917) 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, 232462 + ... + 232557.

It is an arithmetic number, because the mean of its divisors is an integer number (2883124).

Almost surely, 2^22320912 is an apocalyptic number.

It is an amenable number.

22320912 is an abundant number, since it is smaller than the sum of its proper divisors (35341568).

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

22320912 is a wasteful number, since it uses less digits than its factorization.

22320912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465030 (or 465024 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 22320912 is about 4724.5012435177. The cubic root of 22320912 is about 281.5597980876.

It can be divided in two parts, 22320 and 912, that added together give a palindrome (23232).

The spelling of 22320912 in words is "twenty-two million, three hundred twenty thousand, nine hundred twelve".