22288238 has 12 divisors (see below), whose sum is σ = 38890872. Its totient is φ = 9552060.

The previous prime is 22288237. The next prime is 22288243. The reversal of 22288238 is 83288222.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22288198 and 22288207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22288237) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 113618 + ... + 113813.

It is an arithmetic number, because the mean of its divisors is an integer number (3240906).

Almost surely, 2^22288238 is an apocalyptic number.

22288238 is a deficient number, since it is larger than the sum of its proper divisors (16602634).

22288238 is a wasteful number, since it uses less digits than its factorization.

22288238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227447 (or 227440 counting only the distinct ones).

The product of its digits is 24576, while the sum is 35.

The square root of 22288238 is about 4721.0420459894. The cubic root of 22288238 is about 281.4223458571.

The spelling of 22288238 in words is "twenty-two million, two hundred eighty-eight thousand, two hundred thirty-eight".