22438460 has 48 divisors (see below), whose sum is σ = 53192160. Its totient is φ = 7875840.

The previous prime is 22438459. The next prime is 22438511. The reversal of 22438460 is 6483422.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 4622 + ... + 8138.

It is an arithmetic number, because the mean of its divisors is an integer number (1108170).

Almost surely, 2^22438460 is an apocalyptic number.

22438460 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 22438460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26596080).

22438460 is an abundant number, since it is smaller than the sum of its proper divisors (30753700).

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

22438460 is a wasteful number, since it uses less digits than its factorization.

22438460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566 (or 3564 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 22438460 is about 4736.9251630145. The cubic root of 22438460 is about 282.0531898395.

The spelling of 22438460 in words is "twenty-two million, four hundred thirty-eight thousand, four hundred sixty".