22438480 has 40 divisors (see below), whose sum is σ = 53449704. Its totient is φ = 8755200.

The previous prime is 22438459. The next prime is 22438511. The reversal of 22438480 is 8483422.

It can be written as a sum of positive squares in 4 ways, for example, as 685584 + 21752896 = 828^2 + 4664^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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, 141 + ... + 6700.

Almost surely, 2^22438480 is an apocalyptic number.

22438480 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 22438480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26724852).

22438480 is an abundant number, since it is smaller than the sum of its proper divisors (31011224).

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

22438480 is a wasteful number, since it uses less digits than its factorization.

22438480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6895 (or 6889 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 22438480 is about 4736.9272740881. The cubic root of 22438480 is about 282.0532736400.

The spelling of 22438480 in words is "twenty-two million, four hundred thirty-eight thousand, four hundred eighty".