22302444 has 12 divisors (see below), whose sum is σ = 52039064. Its totient is φ = 7434144.

The previous prime is 22302437. The next prime is 22302457. The reversal of 22302444 is 44420322.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 22302444.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 929257 + ... + 929280.

Almost surely, 2^22302444 is an apocalyptic number.

It is an amenable number.

22302444 is an abundant number, since it is smaller than the sum of its proper divisors (29736620).

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

22302444 is a wasteful number, since it uses less digits than its factorization.

22302444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858544 (or 1858542 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 22302444 is about 4722.5463470463. The cubic root of 22302444 is about 281.4821238255.

Adding to 22302444 its reverse (44420322), we get a palindrome (66722766).

The spelling of 22302444 in words is "twenty-two million, three hundred two thousand, four hundred forty-four".