268593540 has 144 divisors (see below), whose sum is σ = 838760832. Its totient is φ = 63878144.

The previous prime is 268593539. The next prime is 268593571. The reversal of 268593540 is 45395862.

It is a junction number, because it is equal to n+sod(n) for n = 268593492 and 268593501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2510167 + ... + 2510273.

It is an arithmetic number, because the mean of its divisors is an integer number (5824728).

Almost surely, 2^268593540 is an apocalyptic number.

268593540 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 268593540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (419380416).

268593540 is an abundant number, since it is smaller than the sum of its proper divisors (570167292).

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

268593540 is a wasteful number, since it uses less digits than its factorization.

268593540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 268593540 is about 16388.8236307552. The cubic root of 268593540 is about 645.2061837078.

The spelling of 268593540 in words is "two hundred sixty-eight million, five hundred ninety-three thousand, five hundred forty".