22775244 has 48 divisors (see below), whose sum is σ = 55883520. Its totient is φ = 7205440.

The previous prime is 22775231. The next prime is 22775261. The reversal of 22775244 is 44257722.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 49174 + ... + 49634.

It is an arithmetic number, because the mean of its divisors is an integer number (1164240).

Almost surely, 2^22775244 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 22775244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27941760).

22775244 is an abundant number, since it is smaller than the sum of its proper divisors (33108276).

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

22775244 is a wasteful number, since it uses less digits than its factorization.

22775244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its digits is 31360, while the sum is 33.

The square root of 22775244 is about 4772.3415636352. The cubic root of 22775244 is about 283.4573218200.

The spelling of 22775244 in words is "twenty-two million, seven hundred seventy-five thousand, two hundred forty-four".