22297283 has 4 divisors (see below), whose sum is σ = 22306728. Its totient is φ = 22287840.

The previous prime is 22297271. The next prime is 22297291. The reversal of 22297283 is 38279222.

It is a happy number.

It is a Cunningham number, because it is equal to 4722²-1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22297283 - 2¹⁰ = 22296259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22297213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360 + ... + 7082.

It is an arithmetic number, because the mean of its divisors is an integer number (5576682).

Almost surely, 2^22297283 is an apocalyptic number.

22297283 is a deficient number, since it is larger than the sum of its proper divisors (9445).

22297283 is an equidigital number, since it uses as much as digits as its factorization.

22297283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9444.

The product of its digits is 24192, while the sum is 35.

The square root of 22297283 is about 4721.9998941127. Note that the first 3 decimals coincide. The cubic root of 22297283 is about 281.4604095938.

The spelling of 22297283 in words is "twenty-two million, two hundred ninety-seven thousand, two hundred eighty-three".