268992388 has 24 divisors (see below), whose sum is σ = 538477632. Its totient is φ = 115176864.

The previous prime is 268992359. The next prime is 268992397. The reversal of 268992388 is 883299862.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31995 + ... + 39517.

It is an arithmetic number, because the mean of its divisors is an integer number (22436568).

Almost surely, 2^268992388 is an apocalyptic number.

268992388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

268992388 is an abundant number, since it is smaller than the sum of its proper divisors (269485244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268992388 is a wasteful number, since it uses less digits than its factorization.

268992388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8811 (or 8809 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 55.

The square root of 268992388 is about 16400.9874092995. The cubic root of 268992388 is about 645.5253920828.

The spelling of 268992388 in words is "two hundred sixty-eight million, nine hundred ninety-two thousand, three hundred eighty-eight".