22782272 has 28 divisors (see below), whose sum is σ = 46670976. Its totient is φ = 11022720.

The previous prime is 22782271. The next prime is 22782281. The reversal of 22782272 is 27228722.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22782271) 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, 3758 + ... + 7725.

Almost surely, 2^22782272 is an apocalyptic number.

It is an amenable number.

22782272 is an abundant number, since it is smaller than the sum of its proper divisors (23888704).

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

22782272 is a wasteful number, since it uses less digits than its factorization.

22782272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11526 (or 11516 counting only the distinct ones).

The product of its digits is 12544, while the sum is 32.

The square root of 22782272 is about 4773.0778330130. The cubic root of 22782272 is about 283.4864753047.

The spelling of 22782272 in words is "twenty-two million, seven hundred eighty-two thousand, two hundred seventy-two".