22152944 has 40 divisors (see below), whose sum is σ = 47139840. Its totient is φ = 10001600.

The previous prime is 22152937. The next prime is 22152971. The reversal of 22152944 is 44925122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33287 + ... + 33945.

It is an arithmetic number, because the mean of its divisors is an integer number (1178496).

Almost surely, 2^22152944 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 22152944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23569920).

22152944 is an abundant number, since it is smaller than the sum of its proper divisors (24986896).

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

22152944 is a wasteful number, since it uses less digits than its factorization.

22152944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 863 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 22152944 is about 4706.6914069227. The cubic root of 22152944 is about 280.8517600599.

The spelling of 22152944 in words is "twenty-two million, one hundred fifty-two thousand, nine hundred forty-four".