22243239 has 6 divisors (see below), whose sum is σ = 32129136. Its totient is φ = 14828820.

The previous prime is 22243229. The next prime is 22243283. The reversal of 22243239 is 93234222.

22243239 is a `hidden beast` number, since 222 + 432 + 3 + 9 = 666.

It is not a de Polignac number, because 22243239 - 2¹³ = 22235047 is a prime.

It is a super-2 number, since 2×22243239² = 989523362422242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22243219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1235727 + ... + 1235744.

It is an arithmetic number, because the mean of its divisors is an integer number (5354856).

Almost surely, 2^22243239 is an apocalyptic number.

22243239 is a deficient number, since it is larger than the sum of its proper divisors (9885897).

22243239 is a wasteful number, since it uses less digits than its factorization.

22243239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471477 (or 2471474 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 22243239 is about 4716.2738470110. The cubic root of 22243239 is about 281.2328250253.

The spelling of 22243239 in words is "twenty-two million, two hundred forty-three thousand, two hundred thirty-nine".