268304399 has 8 divisors (see below), whose sum is σ = 292910160. Its totient is φ = 243734400.

The previous prime is 268304359. The next prime is 268304401. The reversal of 268304399 is 993403862.

It is a Cunningham number, because it is equal to 16380²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268304399 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268304359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8189 + ... + 24569.

It is an arithmetic number, because the mean of its divisors is an integer number (36613770).

Almost surely, 2^268304399 is an apocalyptic number.

268304399 is a deficient number, since it is larger than the sum of its proper divisors (24605761).

268304399 is a wasteful number, since it uses less digits than its factorization.

268304399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17881.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 268304399 is about 16379.9999694750. Note that the first 4 decimals coincide. The cubic root of 268304399 is about 644.9745790514.

The spelling of 268304399 in words is "two hundred sixty-eight million, three hundred four thousand, three hundred ninety-nine".