22250008 has 64 divisors (see below), whose sum is σ = 48988800. Its totient is φ = 9361920.

The previous prime is 22249979. The next prime is 22250017. The reversal of 22250008 is 80005222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160003 + ... + 160141.

It is an arithmetic number, because the mean of its divisors is an integer number (765450).

Almost surely, 2^22250008 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 22250008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24494400).

22250008 is an abundant number, since it is smaller than the sum of its proper divisors (26738792).

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

22250008 is a wasteful number, since it uses less digits than its factorization.

22250008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 22250008 is about 4716.9914140265. The cubic root of 22250008 is about 281.2613501263.

The spelling of 22250008 in words is "twenty-two million, two hundred fifty thousand, eight".