268880836 has 18 divisors (see below), whose sum is σ = 547364958. Its totient is φ = 115234560.

The previous prime is 268880831. The next prime is 268880839. The reversal of 268880836 is 638088862.

It can be written as a sum of positive squares in only one way, i.e., 180633600 + 88247236 = 13440^2 + 9394^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 268880836.

It is not an unprimeable number, because it can be changed into a prime (268880831) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 685725 + ... + 686116.

Almost surely, 2^268880836 is an apocalyptic number.

It is an amenable number.

268880836 is an abundant number, since it is smaller than the sum of its proper divisors (278484122).

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

268880836 is a wasteful number, since it uses less digits than its factorization.

268880836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371859 (or 1371850 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The square root of 268880836 is about 16397.5862857922. The cubic root of 268880836 is about 645.4361459327.

The spelling of 268880836 in words is "two hundred sixty-eight million, eight hundred eighty thousand, eight hundred thirty-six".