268280309 has 8 divisors (see below), whose sum is σ = 292789728. Its totient is φ = 243790960.

The previous prime is 268280297. The next prime is 268280339. The reversal of 268280309 is 903082862.

It is a happy number.

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-268280309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268280339) 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, 42794 + ... + 48660.

It is an arithmetic number, because the mean of its divisors is an integer number (36598716).

Almost surely, 2^268280309 is an apocalyptic number.

It is an amenable number.

268280309 is a deficient number, since it is larger than the sum of its proper divisors (24509419).

268280309 is a wasteful number, since it uses less digits than its factorization.

268280309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10035.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 268280309 is about 16379.2646049815. The cubic root of 268280309 is about 644.9552752274.

The spelling of 268280309 in words is "two hundred sixty-eight million, two hundred eighty thousand, three hundred nine".