268256247 has 16 divisors (see below), whose sum is σ = 414531072. Its totient is φ = 151129440.

The previous prime is 268256227. The next prime is 268256281. The reversal of 268256247 is 742652862.

It is not a de Polignac number, because 268256247 - 2⁸ = 268255991 is a prime.

It is a super-2 number, since 2×268256247² = 143922828109050018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 268256199 and 268256208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268256207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88468 + ... + 91449.

It is an arithmetic number, because the mean of its divisors is an integer number (25908192).

Almost surely, 2^268256247 is an apocalyptic number.

268256247 is a deficient number, since it is larger than the sum of its proper divisors (146274825).

268256247 is a wasteful number, since it uses less digits than its factorization.

268256247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179998.

The product of its digits is 322560, while the sum is 42.

The square root of 268256247 is about 16378.5300622492. The cubic root of 268256247 is about 644.9359926869.

The spelling of 268256247 in words is "two hundred sixty-eight million, two hundred fifty-six thousand, two hundred forty-seven".