22155008 has 36 divisors (see below), whose sum is σ = 45438120. Its totient is φ = 10773504.

The previous prime is 22154999. The next prime is 22155011. The reversal of 22155008 is 80055122.

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, 8303 + ... + 10641.

It is an arithmetic number, because the mean of its divisors is an integer number (1262170).

Almost surely, 2^22155008 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 22155008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22719060).

22155008 is an abundant number, since it is smaller than the sum of its proper divisors (23283112).

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

22155008 is an equidigital number, since it uses as much as digits as its factorization.

22155008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2378 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 22155008 is about 4706.9106641193. The cubic root of 22155008 is about 280.8604821516.

The spelling of 22155008 in words is "twenty-two million, one hundred fifty-five thousand, eight".