22771984 has 15 divisors (see below), whose sum is σ = 44157733. Its totient is φ = 11376448.

The previous prime is 22771979. The next prime is 22771997. The reversal of 22771984 is 48917722.

The square root of 22771984 is 4772.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 11696400 + 11075584 = 3420^2 + 3328^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18492 + ... + 19684.

Almost surely, 2^22771984 is an apocalyptic number.

22771984 is the 4772-nd square number.

It is an amenable number.

22771984 is a deficient number, since it is larger than the sum of its proper divisors (21385749).

22771984 is an frugal number, since it uses more digits than its factorization.

22771984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394 (or 1195 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The cubic root of 22771984 is about 283.4437966819.

The spelling of 22771984 in words is "twenty-two million, seven hundred seventy-one thousand, nine hundred eighty-four".