22378244 has 12 divisors (see below), whose sum is σ = 44756544. Its totient is φ = 9590664.

The previous prime is 22378231. The next prime is 22378247. The reversal of 22378244 is 44287322.

22378244 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 22378244.

It is not an unprimeable number, because it can be changed into a prime (22378247) 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, 399584 + ... + 399639.

It is an arithmetic number, because the mean of its divisors is an integer number (3729712).

Almost surely, 2^22378244 is an apocalyptic number.

It is an amenable number.

22378244 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.

22378244 is a wasteful number, since it uses less digits than its factorization.

22378244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799234 (or 799232 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 22378244 is about 4730.5648711333. The cubic root of 22378244 is about 281.8006572018.

It can be divided in two parts, 22378 and 244, that added together give a palindrome (22622).

The spelling of 22378244 in words is "twenty-two million, three hundred seventy-eight thousand, two hundred forty-four".