22182438 has 8 divisors (see below), whose sum is σ = 44364888. Its totient is φ = 7394144.

The previous prime is 22182431. The next prime is 22182451. The reversal of 22182438 is 83428122.

It is a sphenic number, since it is the product of 3 distinct primes.

22182438 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22182431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1848531 + ... + 1848542.

It is an arithmetic number, because the mean of its divisors is an integer number (5545611).

Almost surely, 2^22182438 is an apocalyptic number.

22182438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22182438 is a wasteful number, since it uses less digits than its factorization.

22182438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697078.

The product of its digits is 6144, while the sum is 30.

The square root of 22182438 is about 4709.8235635743. The cubic root of 22182438 is about 280.9763449817.

It can be divided in two parts, 2218 and 2438, that added together give a triangular number (4656 = T₉₆).

The spelling of 22182438 in words is "twenty-two million, one hundred eighty-two thousand, four hundred thirty-eight".