268997720 has 32 divisors (see below), whose sum is σ = 620010720. Its totient is φ = 104974080.

The previous prime is 268997717. The next prime is 268997753. The reversal of 268997720 is 27799862.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80372 + ... + 83651.

It is an arithmetic number, because the mean of its divisors is an integer number (19375335).

Almost surely, 2^268997720 is an apocalyptic number.

268997720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268997720 is an abundant number, since it is smaller than the sum of its proper divisors (351013000).

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

268997720 is a wasteful number, since it uses less digits than its factorization.

268997720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164075 (or 164071 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 268997720 is about 16401.1499596827. The cubic root of 268997720 is about 645.5296572823.

The spelling of 268997720 in words is "two hundred sixty-eight million, nine hundred ninety-seven thousand, seven hundred twenty".