22243872 has 96 divisors (see below), whose sum is σ = 67737600. Its totient is φ = 6259968.

The previous prime is 22243867. The next prime is 22243891. The reversal of 22243872 is 27834222.

It is a tau number, because it is divible by the number of its divisors (96).

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52879 + ... + 53297.

It is an arithmetic number, because the mean of its divisors is an integer number (705600).

Almost surely, 2^22243872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22243872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33868800).

22243872 is an abundant number, since it is smaller than the sum of its proper divisors (45493728).

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

22243872 is a wasteful number, since it uses less digits than its factorization.

22243872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 510 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 22243872 is about 4716.3409545961. The cubic root of 22243872 is about 281.2354927826.

The spelling of 22243872 in words is "twenty-two million, two hundred forty-three thousand, eight hundred seventy-two".