22785216 has 28 divisors (see below), whose sum is σ = 60286392. Its totient is φ = 7595008.

The previous prime is 22785211. The next prime is 22785241. The reversal of 22785216 is 61258722.

It is not an unprimeable number, because it can be changed into a prime (22785211) 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, 59145 + ... + 59528.

Almost surely, 2^22785216 is an apocalyptic number.

It is an amenable number.

22785216 is an abundant number, since it is smaller than the sum of its proper divisors (37501176).

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

22785216 is a wasteful number, since it uses less digits than its factorization.

22785216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118688 (or 118678 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 22785216 is about 4773.3862194463. The cubic root of 22785216 is about 283.4986857965.

The spelling of 22785216 in words is "twenty-two million, seven hundred eighty-five thousand, two hundred sixteen".