22251008 has 40 divisors (see below), whose sum is σ = 47892768. Its totient is φ = 10266624.

The previous prime is 22250999. The next prime is 22251013. The reversal of 22251008 is 80015222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4985 + ... + 8327.

Almost surely, 2^22251008 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 22251008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23946384).

22251008 is an abundant number, since it is smaller than the sum of its proper divisors (25641760).

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

22251008 is an equidigital number, since it uses as much as digits as its factorization.

22251008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374 (or 3358 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 22251008 is about 4717.0974126045. The cubic root of 22251008 is about 281.2655637149.

The spelling of 22251008 in words is "twenty-two million, two hundred fifty-one thousand, eight".