22432840 has 64 divisors (see below), whose sum is σ = 52992000. Its totient is φ = 8536320.

The previous prime is 22432829. The next prime is 22432849. The reversal of 22432840 is 4823422.

It is not an unprimeable number, because it can be changed into a prime (22432849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97846 + ... + 98074.

It is an arithmetic number, because the mean of its divisors is an integer number (828000).

Almost surely, 2^22432840 is an apocalyptic number.

22432840 is a gapful number since it is divisible by the number (20) 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 22432840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26496000).

22432840 is an abundant number, since it is smaller than the sum of its proper divisors (30559160).

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

22432840 is a wasteful number, since it uses less digits than its factorization.

22432840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 22432840 is about 4736.3319140449. The cubic root of 22432840 is about 282.0296399273.

The spelling of 22432840 in words is "twenty-two million, four hundred thirty-two thousand, eight hundred forty".