22240890 has 96 divisors (see below), whose sum is σ = 67706496. Its totient is φ = 4959360.

The previous prime is 22240853. The next prime is 22240903. The reversal of 22240890 is 9804222.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26680 + ... + 27500.

It is an arithmetic number, because the mean of its divisors is an integer number (705276).

Almost surely, 2^22240890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22240890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33853248).

22240890 is an abundant number, since it is smaller than the sum of its proper divisors (45465606).

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

22240890 is a wasteful number, since it uses less digits than its factorization.

22240890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22240890 is about 4716.0248090950. The cubic root of 22240890 is about 281.2229248010. Note that the first 3 decimals are identical.

The spelling of 22240890 in words is "twenty-two million, two hundred forty thousand, eight hundred ninety".