22117408 has 48 divisors (see below), whose sum is σ = 46652760. Its totient is φ = 10285056.

The previous prime is 22117399. The next prime is 22117427. The reversal of 22117408 is 80471122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21790224 + 327184 = 4668^2 + 572^2 .

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, 59110 + ... + 59482.

Almost surely, 2^22117408 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 22117408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23326380).

22117408 is an abundant number, since it is smaller than the sum of its proper divisors (24535352).

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

22117408 is a wasteful number, since it uses less digits than its factorization.

22117408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 22117408 is about 4702.9148408195. The cubic root of 22117408 is about 280.7015062988.

The spelling of 22117408 in words is "twenty-two million, one hundred seventeen thousand, four hundred eight".