22428565 has 16 divisors (see below), whose sum is σ = 28377216. Its totient is φ = 16984000.

The previous prime is 22428563. The next prime is 22428587. The reversal of 22428565 is 56582422.

It is not a de Polignac number, because 22428565 - 2¹ = 22428563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22428565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22428563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10650 + ... + 12580.

It is an arithmetic number, because the mean of its divisors is an integer number (1773576).

Almost surely, 2^22428565 is an apocalyptic number.

It is an amenable number.

22428565 is a deficient number, since it is larger than the sum of its proper divisors (5948651).

22428565 is a wasteful number, since it uses less digits than its factorization.

22428565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060.

The product of its digits is 38400, while the sum is 34.

The square root of 22428565 is about 4735.8805939339. The cubic root of 22428565 is about 282.0117234366.

The spelling of 22428565 in words is "twenty-two million, four hundred twenty-eight thousand, five hundred sixty-five".