268238644 has 12 divisors (see below), whose sum is σ = 480334624. Its totient is φ = 131000184.

The previous prime is 268238611. The next prime is 268238669. The reversal of 268238644 is 446832862.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 268238644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779592 + ... + 779935.

Almost surely, 2^268238644 is an apocalyptic number.

It is an amenable number.

268238644 is a deficient number, since it is larger than the sum of its proper divisors (212095980).

268238644 is a wasteful number, since it uses less digits than its factorization.

268238644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559574 (or 1559572 counting only the distinct ones).

The product of its digits is 442368, while the sum is 43.

The square root of 268238644 is about 16377.9926730964. The cubic root of 268238644 is about 644.9218854583.

The spelling of 268238644 in words is "two hundred sixty-eight million, two hundred thirty-eight thousand, six hundred forty-four".