244263643 has 12 divisors (see below), whose sum is σ = 268237008. Its totient is φ = 222287520.

The previous prime is 244263641. The next prime is 244263661. The reversal of 244263643 is 346362442.

It is not a de Polignac number, because 244263643 - 2¹ = 244263641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 244263599 and 244263608.

It is not an unprimeable number, because it can be changed into a prime (244263641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1821 + ... + 22177.

It is an arithmetic number, because the mean of its divisors is an integer number (22353084).

Almost surely, 2^244263643 is an apocalyptic number.

244263643 is a deficient number, since it is larger than the sum of its proper divisors (23973365).

244263643 is a wasteful number, since it uses less digits than its factorization.

244263643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20454 (or 20441 counting only the distinct ones).

The product of its digits is 82944, while the sum is 34.

The square root of 244263643 is about 15628.9360802327. The cubic root of 244263643 is about 625.1049577332.

The spelling of 244263643 in words is "two hundred forty-four million, two hundred sixty-three thousand, six hundred forty-three".