22779472 has 10 divisors (see below), whose sum is σ = 44135258. Its totient is φ = 11389728.

The previous prime is 22779469. The next prime is 22779481. The reversal of 22779472 is 27497722.

It can be written as a sum of positive squares in only one way, i.e., 18352656 + 4426816 = 4284^2 + 2104^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711843 + ... + 711874.

Almost surely, 2^22779472 is an apocalyptic number.

It is an amenable number.

22779472 is a deficient number, since it is larger than the sum of its proper divisors (21355786).

22779472 is a wasteful number, since it uses less digits than its factorization.

22779472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423725 (or 1423719 counting only the distinct ones).

The product of its digits is 98784, while the sum is 40.

The square root of 22779472 is about 4772.7845122109. The cubic root of 22779472 is about 283.4748610892.

The spelling of 22779472 in words is "twenty-two million, seven hundred seventy-nine thousand, four hundred seventy-two".