22564235 has 4 divisors (see below), whose sum is σ = 27077088. Its totient is φ = 18051384.

The previous prime is 22564231. The next prime is 22564279. The reversal of 22564235 is 53246522.

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

It is a cyclic number.

It is not a de Polignac number, because 22564235 - 2² = 22564231 is a prime.

It is a super-2 number, since 2×22564235² = 1018289402270450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22564198 and 22564207.

It is not an unprimeable number, because it can be changed into a prime (22564231) 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, 2256419 + ... + 2256428.

It is an arithmetic number, because the mean of its divisors is an integer number (6769272).

Almost surely, 2^22564235 is an apocalyptic number.

22564235 is a deficient number, since it is larger than the sum of its proper divisors (4512853).

22564235 is an equidigital number, since it uses as much as digits as its factorization.

22564235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512852.

The product of its digits is 14400, while the sum is 29.

The square root of 22564235 is about 4750.1826280681. The cubic root of 22564235 is about 282.5792087389.

The spelling of 22564235 in words is "twenty-two million, five hundred sixty-four thousand, two hundred thirty-five".