22766144 has 14 divisors (see below), whose sum is σ = 45176694. Its totient is φ = 11383040.

The previous prime is 22766143. The next prime is 22766209. The reversal of 22766144 is 44166722.

It can be written as a sum of positive squares in only one way, i.e., 21529600 + 1236544 = 4640^2 + 1112^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 22766144.

It is not an unprimeable number, because it can be changed into a prime (22766143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177797 + ... + 177924.

Almost surely, 2^22766144 is an apocalyptic number.

It is an amenable number.

22766144 is a deficient number, since it is larger than the sum of its proper divisors (22410550).

22766144 is an equidigital number, since it uses as much as digits as its factorization.

22766144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355733 (or 355723 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 22766144 is about 4771.3880579974. The cubic root of 22766144 is about 283.4195643724.

The spelling of 22766144 in words is "twenty-two million, seven hundred sixty-six thousand, one hundred forty-four".