22772244 has 24 divisors (see below), whose sum is σ = 57966048. Its totient is φ = 6900640.

The previous prime is 22772237. The next prime is 22772251. The reversal of 22772244 is 44227722.

It is an interprime number because it is at equal distance from previous prime (22772237) and next prime (22772251).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 10.

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 7 ways as a sum of consecutive naturals, for example, 86127 + ... + 86390.

It is an arithmetic number, because the mean of its divisors is an integer number (2415252).

Almost surely, 2^22772244 is an apocalyptic number.

It is an amenable number.

22772244 is an abundant number, since it is smaller than the sum of its proper divisors (35193804).

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

22772244 is a wasteful number, since it uses less digits than its factorization.

22772244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172535 (or 172533 counting only the distinct ones).

The product of its digits is 12544, while the sum is 30.

The square root of 22772244 is about 4772.0272421687. The cubic root of 22772244 is about 283.4448754213. Note that the first 3 decimals are identical.

Adding to 22772244 its reverse (44227722), we get a palindrome (66999966).

The spelling of 22772244 in words is "twenty-two million, seven hundred seventy-two thousand, two hundred forty-four".