22538859 has 8 divisors (see below), whose sum is σ = 34344960. Its totient is φ = 12879336.

The previous prime is 22538851. The next prime is 22538861. The reversal of 22538859 is 95883522.

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

It is not a de Polignac number, because 22538859 - 2³ = 22538851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22538859.

It is not an unprimeable number, because it can be changed into a prime (22538851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536619 + ... + 536660.

It is an arithmetic number, because the mean of its divisors is an integer number (4293120).

Almost surely, 2^22538859 is an apocalyptic number.

22538859 is a deficient number, since it is larger than the sum of its proper divisors (11806101).

22538859 is a wasteful number, since it uses less digits than its factorization.

22538859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073289.

The product of its digits is 172800, while the sum is 42.

The square root of 22538859 is about 4747.5108214727. The cubic root of 22538859 is about 282.4732383869.

The spelling of 22538859 in words is "twenty-two million, five hundred thirty-eight thousand, eight hundred fifty-nine".