22297284 has 27 divisors (see below), whose sum is σ = 56434287. Its totient is φ = 7422984.

The previous prime is 22297271. The next prime is 22297291. The reversal of 22297284 is 48279222.

It is a happy number.

The square root of 22297284 is 4722.

It is a perfect power (a square), and thus also a powerful number.

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

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 27939 + ... + 28725.

Almost surely, 2^22297284 is an apocalyptic number.

22297284 is the 4722-nd square number.

It is an amenable number.

22297284 is an abundant number, since it is smaller than the sum of its proper divisors (34137003).

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

22297284 is an equidigital number, since it uses as much as digits as its factorization.

22297284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584 (or 792 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The cubic root of 22297284 is about 281.4604138015.

Multiplying 22297284 by its sum of digits (36), we get a square (802702224 = 28332²).

22297284 divided by its sum of digits (36) gives a square (619369 = 787²).

The spelling of 22297284 in words is "twenty-two million, two hundred ninety-seven thousand, two hundred eighty-four".