22238506 has 12 divisors (see below), whose sum is σ = 33876738. Its totient is φ = 10948872.

The previous prime is 22238497. The next prime is 22238527. The reversal of 22238506 is 60583222.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 3272481 = 4355^2 + 1809^2 .

It is a super-2 number, since 2×22238506² = 989102298224072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7740 + ... + 10216.

Almost surely, 2^22238506 is an apocalyptic number.

22238506 is a deficient number, since it is larger than the sum of its proper divisors (11638232).

22238506 is an equidigital number, since it uses as much as digits as its factorization.

22238506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 22238506 is about 4715.7720470778. The cubic root of 22238506 is about 281.2128763511.

The spelling of 22238506 in words is "twenty-two million, two hundred thirty-eight thousand, five hundred six".