22536389 has 8 divisors (see below), whose sum is σ = 23903232. Its totient is φ = 21201840.

The previous prime is 22536361. The next prime is 22536391. The reversal of 22536389 is 98363522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22536389 - 2⁸ = 22536133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22536329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6629 + ... + 9434.

It is an arithmetic number, because the mean of its divisors is an integer number (2987904).

Almost surely, 2^22536389 is an apocalyptic number.

It is an amenable number.

22536389 is a deficient number, since it is larger than the sum of its proper divisors (1366843).

22536389 is a wasteful number, since it uses less digits than its factorization.

22536389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16147.

The product of its digits is 77760, while the sum is 38.

The square root of 22536389 is about 4747.2506780241. The cubic root of 22536389 is about 282.4629194028.

The spelling of 22536389 in words is "twenty-two million, five hundred thirty-six thousand, three hundred eighty-nine".