263401244 has 12 divisors (see below), whose sum is σ = 480993744. Its totient is φ = 125974464.

The previous prime is 263401231. The next prime is 263401253. The reversal of 263401244 is 442104362.

263401244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1431437 + ... + 1431620.

It is an arithmetic number, because the mean of its divisors is an integer number (40082812).

Almost surely, 2^263401244 is an apocalyptic number.

It is an amenable number.

263401244 is a deficient number, since it is larger than the sum of its proper divisors (217592500).

263401244 is a wasteful number, since it uses less digits than its factorization.

263401244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863084 (or 2863082 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 263401244 is about 16229.6409079191. The cubic root of 263401244 is about 641.0215164567.

The spelling of 263401244 in words is "two hundred sixty-three million, four hundred one thousand, two hundred forty-four".