268915540 has 24 divisors (see below), whose sum is σ = 589276800. Its totient is φ = 102889248.

The previous prime is 268915499. The next prime is 268915573. The reversal of 268915540 is 45519862.

It is a junction number, because it is equal to n+sod(n) for n = 268915493 and 268915502.

It is a congruent number.

It is an unprimeable number.

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, 291840 + ... + 292759.

It is an arithmetic number, because the mean of its divisors is an integer number (24553200).

Almost surely, 2^268915540 is an apocalyptic number.

268915540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268915540 is an abundant number, since it is smaller than the sum of its proper divisors (320361260).

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

268915540 is a wasteful number, since it uses less digits than its factorization.

268915540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584631 (or 584629 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 268915540 is about 16398.6444561738. The cubic root of 268915540 is about 645.4639131929.

The spelling of 268915540 in words is "two hundred sixty-eight million, nine hundred fifteen thousand, five hundred forty".