22228650 has 72 divisors (see below), whose sum is σ = 61049664. Its totient is φ = 5796000.

The previous prime is 22228631. The next prime is 22228667. The reversal of 22228650 is 5682222.

22228650 is a `hidden beast` number, since 2 + 2 + 2 + 2 + 8 + 650 = 666.

It is a super-2 number, since 2×22228650² = 988225761645000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20625 + ... + 21675.

It is an arithmetic number, because the mean of its divisors is an integer number (847912).

Almost surely, 2^22228650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22228650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30524832).

22228650 is an abundant number, since it is smaller than the sum of its proper divisors (38821014).

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

22228650 is a wasteful number, since it uses less digits than its factorization.

22228650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 22228650 is about 4714.7269274052. The cubic root of 22228650 is about 281.1713261428.

The spelling of 22228650 in words is "twenty-two million, two hundred twenty-eight thousand, six hundred fifty".