268521312 has 48 divisors (see below), whose sum is σ = 709974720. Its totient is φ = 88858752.

The previous prime is 268521299. The next prime is 268521359. The reversal of 268521312 is 213125862.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 268521312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3283 + ... + 23405.

It is an arithmetic number, because the mean of its divisors is an integer number (14791140).

Almost surely, 2^268521312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268521312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354987360).

268521312 is an abundant number, since it is smaller than the sum of its proper divisors (441453408).

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

268521312 is a wasteful number, since it uses less digits than its factorization.

268521312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20275 (or 20267 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 268521312 is about 16386.6199077174. The cubic root of 268521312 is about 645.1483439819.

The spelling of 268521312 in words is "two hundred sixty-eight million, five hundred twenty-one thousand, three hundred twelve".