22808565 has 48 divisors (see below), whose sum is σ = 43051008. Its totient is φ = 11104128.

The previous prime is 22808557. The next prime is 22808567. The reversal of 22808565 is 56580822.

It is not a de Polignac number, because 22808565 - 2³ = 22808557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22808567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74142 + ... + 74448.

It is an arithmetic number, because the mean of its divisors is an integer number (896896).

Almost surely, 2^22808565 is an apocalyptic number.

It is an amenable number.

22808565 is a deficient number, since it is larger than the sum of its proper divisors (20242443).

22808565 is a wasteful number, since it uses less digits than its factorization.

22808565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 22808565 is about 4775.8313412431. The cubic root of 22808565 is about 283.5954905410.

It can be divided in two parts, 228085 and 65, that added together give a triangular number (228150 = T₆₇₅).

The spelling of 22808565 in words is "twenty-two million, eight hundred eight thousand, five hundred sixty-five".