268806840 has 32 divisors (see below), whose sum is σ = 806420880. Its totient is φ = 71681792.

The previous prime is 268806827. The next prime is 268806847. The reversal of 268806840 is 48608862.

It is a junction number, because it is equal to n+sod(n) for n = 268806792 and 268806801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268806847) 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 7 ways as a sum of consecutive naturals, for example, 1119909 + ... + 1120148.

Almost surely, 2^268806840 is an apocalyptic number.

268806840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268806840 is an abundant number, since it is smaller than the sum of its proper divisors (537614040).

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

268806840 is a wasteful number, since it uses less digits than its factorization.

268806840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240071 (or 2240067 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 268806840 is about 16395.3298228489. The cubic root of 268806840 is about 645.3769324963.

The spelling of 268806840 in words is "two hundred sixty-eight million, eight hundred six thousand, eight hundred forty".