22439456 has 96 divisors (see below), whose sum is σ = 53343360. Its totient is φ = 9179136.

The previous prime is 22439429. The next prime is 22439489. The reversal of 22439456 is 65493422.

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, 134285 + ... + 134451.

It is an arithmetic number, because the mean of its divisors is an integer number (555660).

Almost surely, 2^22439456 is an apocalyptic number.

22439456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22439456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26671680).

22439456 is an abundant number, since it is smaller than the sum of its proper divisors (30903904).

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

22439456 is a wasteful number, since it uses less digits than its factorization.

22439456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 218 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 22439456 is about 4737.0302933378. The cubic root of 22439456 is about 282.0573630436.

The spelling of 22439456 in words is "twenty-two million, four hundred thirty-nine thousand, four hundred fifty-six".