268440648 has 32 divisors (see below), whose sum is σ = 766973760. Its totient is φ = 76697280.

The previous prime is 268440631. The next prime is 268440649. The reversal of 268440648 is 846044862.

It is a super-3 number, since 3×268440648³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (268440649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798763 + ... + 799098.

It is an arithmetic number, because the mean of its divisors is an integer number (23967930).

Almost surely, 2^268440648 is an apocalyptic number.

268440648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

268440648 is an abundant number, since it is smaller than the sum of its proper divisors (498533112).

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

268440648 is a wasteful number, since it uses less digits than its factorization.

268440648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597877 (or 1597873 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The square root of 268440648 is about 16384.1584464995. The cubic root of 268440648 is about 645.0837364995.

The spelling of 268440648 in words is "two hundred sixty-eight million, four hundred forty thousand, six hundred forty-eight".