22237239 has 12 divisors (see below), whose sum is σ = 31293816. Its totient is φ = 14043888.

The previous prime is 22237231. The next prime is 22237253. The reversal of 22237239 is 93273222.

It is not a de Polignac number, because 22237239 - 2³ = 22237231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22237231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9184 + ... + 11349.

It is an arithmetic number, because the mean of its divisors is an integer number (2607818).

Almost surely, 2^22237239 is an apocalyptic number.

22237239 is a deficient number, since it is larger than the sum of its proper divisors (9056577).

22237239 is a wasteful number, since it uses less digits than its factorization.

22237239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20574 (or 20555 counting only the distinct ones).

The product of its digits is 9072, while the sum is 30.

The square root of 22237239 is about 4715.6377087304. The cubic root of 22237239 is about 281.2075357123.

The spelling of 22237239 in words is "twenty-two million, two hundred thirty-seven thousand, two hundred thirty-nine".