22401244 has 24 divisors (see below), whose sum is σ = 39916800. Its totient is φ = 10998720.

The previous prime is 22401229. The next prime is 22401259. The reversal of 22401244 is 44210422.

22401244 = 243² + 244² + ... + 433².

It is an interprime number because it is at equal distance from previous prime (22401229) and next prime (22401259).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 83142 + ... + 83410.

It is an arithmetic number, because the mean of its divisors is an integer number (1663200).

Almost surely, 2^22401244 is an apocalyptic number.

It is an amenable number.

22401244 is a deficient number, since it is larger than the sum of its proper divisors (17515556).

22401244 is a wasteful number, since it uses less digits than its factorization.

22401244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 22401244 is about 4732.9952461417. The cubic root of 22401244 is about 281.8971675429.

Adding to 22401244 its reverse (44210422), we get a palindrome (66611666).

The spelling of 22401244 in words is "twenty-two million, four hundred one thousand, two hundred forty-four".