22364285 has 4 divisors (see below), whose sum is σ = 26837148. Its totient is φ = 17891424.

The previous prime is 22364281. The next prime is 22364297. The reversal of 22364285 is 58246322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12859396 + 9504889 = 3586^2 + 3083^2 .

It is a cyclic number.

It is not a de Polignac number, because 22364285 - 2² = 22364281 is a prime.

It is a super-2 number, since 2×22364285² = 1000322487122450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22364281) 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, 2236424 + ... + 2236433.

It is an arithmetic number, because the mean of its divisors is an integer number (6709287).

Almost surely, 2^22364285 is an apocalyptic number.

It is an amenable number.

22364285 is a deficient number, since it is larger than the sum of its proper divisors (4472863).

22364285 is an equidigital number, since it uses as much as digits as its factorization.

22364285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4472862.

The product of its digits is 23040, while the sum is 32.

The square root of 22364285 is about 4729.0892357831. The cubic root of 22364285 is about 281.7420515674.

The spelling of 22364285 in words is "twenty-two million, three hundred sixty-four thousand, two hundred eighty-five".