22443872 has 24 divisors (see below), whose sum is σ = 48204072. Its totient is φ = 10201600.

The previous prime is 22443853. The next prime is 22443887. The reversal of 22443872 is 27834422.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31529 + ... + 32232.

It is an arithmetic number, because the mean of its divisors is an integer number (2008503).

Almost surely, 2^22443872 is an apocalyptic number.

22443872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22443872 is an abundant number, since it is smaller than the sum of its proper divisors (25760200).

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

22443872 is a wasteful number, since it uses less digits than its factorization.

22443872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63782 (or 63774 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 22443872 is about 4737.4963852229. The cubic root of 22443872 is about 282.0758644371.

It can be divided in two parts, 2244 and 3872, that added together give a palindrome (6116).

The spelling of 22443872 in words is "twenty-two million, four hundred forty-three thousand, eight hundred seventy-two".