268978347 has 16 divisors (see below), whose sum is σ = 434712960. Its totient is φ = 163017000.

The previous prime is 268978313. The next prime is 268978397. The reversal of 268978347 is 743879862.

It is not a de Polignac number, because 268978347 - 2¹¹ = 268976299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 268978293 and 268978302.

It is not an unprimeable number, because it can be changed into a prime (268978397) 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, 452529 + ... + 453122.

It is an arithmetic number, because the mean of its divisors is an integer number (27169560).

Almost surely, 2^268978347 is an apocalyptic number.

268978347 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

268978347 is a deficient number, since it is larger than the sum of its proper divisors (165734613).

268978347 is a wasteful number, since it uses less digits than its factorization.

268978347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905671 (or 905665 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 268978347 is about 16400.5593502173. The cubic root of 268978347 is about 645.5141600676.

The spelling of 268978347 in words is "two hundred sixty-eight million, nine hundred seventy-eight thousand, three hundred forty-seven".