22775256 has 80 divisors (see below), whose sum is σ = 72919440. Its totient is φ = 6505920.

The previous prime is 22775231. The next prime is 22775261. The reversal of 22775256 is 65257722.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22775256.

It is a congruent 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 19 ways as a sum of consecutive naturals, for example, 2026 + ... + 7046.

It is an arithmetic number, because the mean of its divisors is an integer number (911493).

Almost surely, 2^22775256 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 22775256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36459720).

22775256 is an abundant number, since it is smaller than the sum of its proper divisors (50144184).

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

22775256 is a wasteful number, since it uses less digits than its factorization.

22775256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046 (or 5033 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 22775256 is about 4772.3428208795. The cubic root of 22775256 is about 283.4573716034.

The spelling of 22775256 in words is "twenty-two million, seven hundred seventy-five thousand, two hundred fifty-six".