268439805 has 32 divisors (see below), whose sum is σ = 493689600. Its totient is φ = 138229056.

The previous prime is 268439803. The next prime is 268439807. The reversal of 268439805 is 508934862.

It is an interprime number because it is at equal distance from previous prime (268439803) and next prime (268439807).

It is not a de Polignac number, because 268439805 - 2¹ = 268439803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268439803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30369 + ... + 38198.

It is an arithmetic number, because the mean of its divisors is an integer number (15427800).

Almost surely, 2^268439805 is an apocalyptic number.

It is an amenable number.

268439805 is a deficient number, since it is larger than the sum of its proper divisors (225249795).

268439805 is a wasteful number, since it uses less digits than its factorization.

268439805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68610 (or 68604 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 268439805 is about 16384.1327204097. The cubic root of 268439805 is about 645.0830612339.

The spelling of 268439805 in words is "two hundred sixty-eight million, four hundred thirty-nine thousand, eight hundred five".