268236440 has 16 divisors (see below), whose sum is σ = 603532080. Its totient is φ = 107294560.

The previous prime is 268236427. The next prime is 268236469. The reversal of 268236440 is 44632862.

It is a self number, because there is not a number n which added to its sum of digits gives 268236440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3352916 + ... + 3352995.

It is an arithmetic number, because the mean of its divisors is an integer number (37720755).

Almost surely, 2^268236440 is an apocalyptic number.

268236440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268236440 is an abundant number, since it is smaller than the sum of its proper divisors (335295640).

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

268236440 is a wasteful number, since it uses less digits than its factorization.

268236440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6705922 (or 6705918 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 268236440 is about 16377.9253875453. The cubic root of 268236440 is about 644.9201191061.

The spelling of 268236440 in words is "two hundred sixty-eight million, two hundred thirty-six thousand, four hundred forty".