22347216 has 60 divisors (see below), whose sum is σ = 62868000. Its totient is φ = 7410240.

The previous prime is 22347209. The next prime is 22347233. The reversal of 22347216 is 61274322.

It is a self number, because there is not a number n which added to its sum of digits gives 22347216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44535 + ... + 45033.

It is an arithmetic number, because the mean of its divisors is an integer number (1047800).

Almost surely, 2^22347216 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 22347216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31434000).

22347216 is an abundant number, since it is smaller than the sum of its proper divisors (40520784).

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

22347216 is a wasteful number, since it uses less digits than its factorization.

22347216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 815 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 22347216 is about 4727.2842097763. The cubic root of 22347216 is about 281.6703557204.

The spelling of 22347216 in words is "twenty-two million, three hundred forty-seven thousand, two hundred sixteen".