22797288 has 64 divisors (see below), whose sum is σ = 64156800. Its totient is φ = 7593264.

The previous prime is 22797287. The next prime is 22797293. The reversal of 22797288 is 88279722.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22797287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16845 + ... + 18147.

It is an arithmetic number, because the mean of its divisors is an integer number (1002450).

Almost surely, 2^22797288 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 22797288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32078400).

22797288 is an abundant number, since it is smaller than the sum of its proper divisors (41359512).

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

22797288 is an equidigital number, since it uses as much as digits as its factorization.

22797288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1308 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 22797288 is about 4774.6505631302. The cubic root of 22797288 is about 283.5487444530.

The spelling of 22797288 in words is "twenty-two million, seven hundred ninety-seven thousand, two hundred eighty-eight".