268721382 has 16 divisors (see below), whose sum is σ = 537666480. Its totient is φ = 89536512.

The previous prime is 268721359. The next prime is 268721399. The reversal of 268721382 is 283127862.

268721382 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×268721382² = 144422362287979848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268721382.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9094 + ... + 24902.

It is an arithmetic number, because the mean of its divisors is an integer number (33604155).

Almost surely, 2^268721382 is an apocalyptic number.

268721382 is an abundant number, since it is smaller than the sum of its proper divisors (268945098).

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

268721382 is a wasteful number, since it uses less digits than its factorization.

268721382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18647.

The product of its digits is 64512, while the sum is 39.

The square root of 268721382 is about 16392.7234467004. The cubic root of 268721382 is about 645.3085333594.

The spelling of 268721382 in words is "two hundred sixty-eight million, seven hundred twenty-one thousand, three hundred eighty-two".