263213268 has 24 divisors (see below), whose sum is σ = 618290400. Its totient is φ = 87148320.

The previous prime is 263213267. The next prime is 263213297. The reversal of 263213268 is 862312362.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263213267) by changing a digit.

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, 71818 + ... + 75393.

It is an arithmetic number, because the mean of its divisors is an integer number (25762100).

Almost surely, 2^263213268 is an apocalyptic number.

It is an amenable number.

263213268 is an abundant number, since it is smaller than the sum of its proper divisors (355077132).

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

263213268 is a wasteful number, since it uses less digits than its factorization.

263213268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147367 (or 147365 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 263213268 is about 16223.8487418985. The cubic root of 263213268 is about 640.8689920745.

It can be divided in two parts, 263 and 213268, that added together give a triangular number (213531 = T₆₅₃).

The spelling of 263213268 in words is "two hundred sixty-three million, two hundred thirteen thousand, two hundred sixty-eight".