22381984 has 12 divisors (see below), whose sum is σ = 44064594. Its totient is φ = 11190976.

The previous prime is 22381963. The next prime is 22381993. The reversal of 22381984 is 48918322.

It can be written as a sum of positive squares in only one way, i.e., 14653584 + 7728400 = 3828^2 + 2780^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349687 + ... + 349750.

Almost surely, 2^22381984 is an apocalyptic number.

It is an amenable number.

22381984 is a deficient number, since it is larger than the sum of its proper divisors (21682610).

22381984 is an equidigital number, since it uses as much as digits as its factorization.

22381984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699447 (or 699439 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 22381984 is about 4730.9601562474. The cubic root of 22381984 is about 281.8163551233.

The spelling of 22381984 in words is "twenty-two million, three hundred eighty-one thousand, nine hundred eighty-four".