22440384 has 42 divisors (see below), whose sum is σ = 64322960. Its totient is φ = 7479936.

The previous prime is 22440347. The next prime is 22440401. The reversal of 22440384 is 48304422.

It is a happy number.

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, 18904 + ... + 20055.

Almost surely, 2^22440384 is an apocalyptic number.

22440384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22440384 is an abundant number, since it is smaller than the sum of its proper divisors (41882576).

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

22440384 is a wasteful number, since it uses less digits than its factorization.

22440384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38977 (or 38964 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 22440384 is about 4737.1282439892. The cubic root of 22440384 is about 282.0612512190.

The spelling of 22440384 in words is "twenty-two million, four hundred forty thousand, three hundred eighty-four".