22238559 has 24 divisors (see below), whose sum is σ = 37065600. Its totient is φ = 12585168.

The previous prime is 22238551. The next prime is 22238581. The reversal of 22238559 is 95583222.

22238559 is a `hidden beast` number, since 222 + 385 + 59 = 666.

It is not a de Polignac number, because 22238559 - 2³ = 22238551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22238551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5092 + ... + 8390.

It is an arithmetic number, because the mean of its divisors is an integer number (1544400).

Almost surely, 2^22238559 is an apocalyptic number.

22238559 is a deficient number, since it is larger than the sum of its proper divisors (14827041).

22238559 is a wasteful number, since it uses less digits than its factorization.

22238559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419 (or 3416 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 22238559 is about 4715.7776665148. Note that the first 3 decimals coincide. The cubic root of 22238559 is about 281.2130997515.

It can be divided in two parts, 222 and 38559, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 22238559 in words is "twenty-two million, two hundred thirty-eight thousand, five hundred fifty-nine".