22785672 has 64 divisors (see below), whose sum is σ = 70116480. Its totient is φ = 6008832.

The previous prime is 22785671. The next prime is 22785689. The reversal of 22785672 is 27658722.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 22785672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22785671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3033 + ... + 7400.

It is an arithmetic number, because the mean of its divisors is an integer number (1095570).

Almost surely, 2^22785672 is an apocalyptic number.

It is an amenable number.

22785672 is an abundant number, since it is smaller than the sum of its proper divisors (47330808).

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

22785672 is a wasteful number, since it uses less digits than its factorization.

22785672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10462 (or 10458 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 22785672 is about 4773.4339840413. The cubic root of 22785672 is about 283.5005770015.

The spelling of 22785672 in words is "twenty-two million, seven hundred eighty-five thousand, six hundred seventy-two".