268906380 has 96 divisors (see below), whose sum is σ = 782550720. Its totient is φ = 68935680.

The previous prime is 268906333. The next prime is 268906397. The reversal of 268906380 is 83609862.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196900 + ... + 198260.

It is an arithmetic number, because the mean of its divisors is an integer number (8151570).

Almost surely, 2^268906380 is an apocalyptic number.

268906380 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 268906380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391275360).

268906380 is an abundant number, since it is smaller than the sum of its proper divisors (513644340).

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

268906380 is a wasteful number, since it uses less digits than its factorization.

268906380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499 (or 1497 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 268906380 is about 16398.3651624179. The cubic root of 268906380 is about 645.4565843533.

The spelling of 268906380 in words is "two hundred sixty-eight million, nine hundred six thousand, three hundred eighty".