268157568 has 64 divisors (see below), whose sum is σ = 814057920. Its totient is φ = 76615680.

The previous prime is 268157531. The next prime is 268157569. The reversal of 268157568 is 865751862.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (268157569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47193 + ... + 52568.

It is an arithmetic number, because the mean of its divisors is an integer number (12719655).

Almost surely, 2^268157568 is an apocalyptic number.

268157568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

268157568 is an abundant number, since it is smaller than the sum of its proper divisors (545900352).

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

268157568 is an equidigital number, since it uses as much as digits as its factorization.

268157568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99785 (or 99773 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The square root of 268157568 is about 16375.5173353394. The cubic root of 268157568 is about 644.8569023336.

The spelling of 268157568 in words is "two hundred sixty-eight million, one hundred fifty-seven thousand, five hundred sixty-eight".