22189446 has 48 divisors (see below), whose sum is σ = 49886928. Its totient is φ = 7123200.

The previous prime is 22189439. The next prime is 22189451. The reversal of 22189446 is 64498122.

It is a self number, because there is not a number n which added to its sum of digits gives 22189446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78826 + ... + 79106.

It is an arithmetic number, because the mean of its divisors is an integer number (1039311).

Almost surely, 2^22189446 is an apocalyptic number.

22189446 is an abundant number, since it is smaller than the sum of its proper divisors (27697482).

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

22189446 is a wasteful number, since it uses less digits than its factorization.

22189446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 434 counting only the distinct ones).

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

The square root of 22189446 is about 4710.5674817372. The cubic root of 22189446 is about 281.0059310729.

It can be divided in two parts, 2218 and 9446, that added together give a square (11664 = 108²).

The spelling of 22189446 in words is "twenty-two million, one hundred eighty-nine thousand, four hundred forty-six".