268915680 has 192 divisors, whose sum is σ = 1026950400. Its totient is φ = 65180160.

The previous prime is 268915663. The next prime is 268915681. The reversal of 268915680 is 86519862.

268915680 is a `hidden beast` number, since 2 + 6 + 89 + 1 + 568 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268915681) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 44691 + ... + 50349.

It is an arithmetic number, because the mean of its divisors is an integer number (5348700).

Almost surely, 2^268915680 is an apocalyptic number.

268915680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268915680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513475200).

268915680 is an abundant number, since it is smaller than the sum of its proper divisors (758034720).

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

268915680 is a wasteful number, since it uses less digits than its factorization.

268915680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694 (or 5680 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 268915680 is about 16398.6487248188. The cubic root of 268915680 is about 645.4640252045.

The spelling of 268915680 in words is "two hundred sixty-eight million, nine hundred fifteen thousand, six hundred eighty".