22389984 has 36 divisors (see below), whose sum is σ = 63672336. Its totient is φ = 7463232.

The previous prime is 22389959. The next prime is 22390007. The reversal of 22389984 is 48998322.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×22389984² = 1002622767040512, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38584 + ... + 39159.

It is an arithmetic number, because the mean of its divisors is an integer number (1768676).

Almost surely, 2^22389984 is an apocalyptic number.

22389984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22389984 is an abundant number, since it is smaller than the sum of its proper divisors (41282352).

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

22389984 is a wasteful number, since it uses less digits than its factorization.

22389984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77759 (or 77748 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 22389984 is about 4731.8055750422. The cubic root of 22389984 is about 281.8499276949.

The spelling of 22389984 in words is "twenty-two million, three hundred eighty-nine thousand, nine hundred eighty-four".