22238892 has 144 divisors (see below), whose sum is σ = 66349920. Its totient is φ = 6220800.

The previous prime is 22238891. The next prime is 22238903. The reversal of 22238892 is 29883222.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (27648) is a multiple of the sum of its prime factors (144).

It is not an unprimeable number, because it can be changed into a prime (22238891) 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 47 ways as a sum of consecutive naturals, for example, 364542 + ... + 364602.

Almost surely, 2^22238892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22238892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33174960).

22238892 is an abundant number, since it is smaller than the sum of its proper divisors (44111028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22238892 is a wasteful number, since it uses less digits than its factorization.

22238892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 139 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 22238892 is about 4715.8129733907. The cubic root of 22238892 is about 281.2145033720.

It can be divided in two parts, 2223 and 8892, that multiplied together give a square (19766916 = 4446²).

The spelling of 22238892 in words is "twenty-two million, two hundred thirty-eight thousand, eight hundred ninety-two".