22388865 has 16 divisors (see below), whose sum is σ = 36045888. Its totient is φ = 11866176.

The previous prime is 22388857. The next prime is 22388879. The reversal of 22388865 is 56888322.

It is not a de Polignac number, because 22388865 - 2³ = 22388857 is a prime.

It is a super-3 number, since 3×22388865³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2134 + ... + 7023.

It is an arithmetic number, because the mean of its divisors is an integer number (2252868).

Almost surely, 2^22388865 is an apocalyptic number.

It is an amenable number.

22388865 is a deficient number, since it is larger than the sum of its proper divisors (13657023).

22388865 is a wasteful number, since it uses less digits than its factorization.

22388865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9328.

The product of its digits is 184320, while the sum is 42.

The square root of 22388865 is about 4731.6873311748. The cubic root of 22388865 is about 281.8452322125.

The spelling of 22388865 in words is "twenty-two million, three hundred eighty-eight thousand, eight hundred sixty-five".