22288973 has 12 divisors (see below), whose sum is σ = 26356572. Its totient is φ = 18789120.

The previous prime is 22288967. The next prime is 22288993. The reversal of 22288973 is 37988222.

It can be written as a sum of positive squares in 2 ways, for example, as 3087049 + 19201924 = 1757^2 + 4382^2 .

It is not a de Polignac number, because 22288973 - 2¹⁴ = 22272589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22288973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22288913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740 + ... + 6717.

It is an arithmetic number, because the mean of its divisors is an integer number (2196381).

Almost surely, 2^22288973 is an apocalyptic number.

It is an amenable number.

22288973 is a deficient number, since it is larger than the sum of its proper divisors (4067599).

22288973 is an equidigital number, since it uses as much as digits as its factorization.

22288973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7532 (or 7525 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 22288973 is about 4721.1198883316. The cubic root of 22288973 is about 281.4254393146.

The spelling of 22288973 in words is "twenty-two million, two hundred eighty-eight thousand, nine hundred seventy-three".