22238566 has 16 divisors (see below), whose sum is σ = 38246400. Its totient is φ = 9500040.

The previous prime is 22238551. The next prime is 22238581. The reversal of 22238566 is 66583222.

It is an interprime number because it is at equal distance from previous prime (22238551) and next prime (22238581).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2235 + ... + 7033.

It is an arithmetic number, because the mean of its divisors is an integer number (2390400).

Almost surely, 2^22238566 is an apocalyptic number.

22238566 is a deficient number, since it is larger than the sum of its proper divisors (16007834).

22238566 is a wasteful number, since it uses less digits than its factorization.

22238566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139.

The product of its digits is 34560, while the sum is 34.

The square root of 22238566 is about 4715.7784087041. The cubic root of 22238566 is about 281.2131292571.

The spelling of 22238566 in words is "twenty-two million, two hundred thirty-eight thousand, five hundred sixty-six".