268281644 has 12 divisors (see below), whose sum is σ = 480411624. Its totient is φ = 131021184.

The previous prime is 268281631. The next prime is 268281701. The reversal of 268281644 is 446182862.

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, 779717 + ... + 780060.

It is an arithmetic number, because the mean of its divisors is an integer number (40034302).

Almost surely, 2^268281644 is an apocalyptic number.

It is an amenable number.

268281644 is a deficient number, since it is larger than the sum of its proper divisors (212129980).

268281644 is a wasteful number, since it uses less digits than its factorization.

268281644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559824 (or 1559822 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 268281644 is about 16379.3053576762. The cubic root of 268281644 is about 644.9563450213.

The spelling of 268281644 in words is "two hundred sixty-eight million, two hundred eighty-one thousand, six hundred forty-four".