268888957 has 4 divisors (see below), whose sum is σ = 278161020. Its totient is φ = 259616896.

The previous prime is 268888943. The next prime is 268888979. The reversal of 268888957 is 759888862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203376121 + 65512836 = 14261^2 + 8094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268888957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268888895 and 268888904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268888937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4635988 + ... + 4636045.

It is an arithmetic number, because the mean of its divisors is an integer number (69540255).

Almost surely, 2^268888957 is an apocalyptic number.

It is an amenable number.

268888957 is a deficient number, since it is larger than the sum of its proper divisors (9272063).

268888957 is an equidigital number, since it uses as much as digits as its factorization.

268888957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9272062.

The product of its digits is 15482880, while the sum is 61.

The square root of 268888957 is about 16397.8339118312. The cubic root of 268888957 is about 645.4426438970.

The spelling of 268888957 in words is "two hundred sixty-eight million, eight hundred eighty-eight thousand, nine hundred fifty-seven".