22865216 has 28 divisors (see below), whose sum is σ = 49499520. Its totient is φ = 10392960.

The previous prime is 22865203. The next prime is 22865231. The reversal of 22865216 is 61256822.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 15536 + ... + 16943.

It is an arithmetic number, because the mean of its divisors is an integer number (1767840).

Almost surely, 2^22865216 is an apocalyptic number.

It is an amenable number.

22865216 is an abundant number, since it is smaller than the sum of its proper divisors (26634304).

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

22865216 is a wasteful number, since it uses less digits than its factorization.

22865216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32502 (or 32492 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 22865216 is about 4781.7586722878. The cubic root of 22865216 is about 283.8300907905.

The spelling of 22865216 in words is "twenty-two million, eight hundred sixty-five thousand, two hundred sixteen".