22406944 has 48 divisors (see below), whose sum is σ = 51202368. Its totient is φ = 9453312.

The previous prime is 22406933. The next prime is 22406953. The reversal of 22406944 is 44960422.

It is a super-2 number, since 2×22406944² = 1004142278838272, which contains 22 as substring.

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, 14262 + ... + 15754.

It is an arithmetic number, because the mean of its divisors is an integer number (1066716).

Almost surely, 2^22406944 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 22406944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25601184).

22406944 is an abundant number, since it is smaller than the sum of its proper divisors (28795424).

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

22406944 is a wasteful number, since it uses less digits than its factorization.

22406944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 22406944 is about 4733.5973635281. The cubic root of 22406944 is about 281.9210751079.

The spelling of 22406944 in words is "twenty-two million, four hundred six thousand, nine hundred forty-four".