268672780 has 24 divisors (see below), whose sum is σ = 567337680. Its totient is φ = 106873920.

The previous prime is 268672763. The next prime is 268672783. The reversal of 268672780 is 87276862.

It is a self number, because there is not a number n which added to its sum of digits gives 268672780.

It is not an unprimeable number, because it can be changed into a prime (268672783) 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 7 ways as a sum of consecutive naturals, for example, 33490 + ... + 40729.

It is an arithmetic number, because the mean of its divisors is an integer number (23639070).

Almost surely, 2^268672780 is an apocalyptic number.

268672780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268672780 is an abundant number, since it is smaller than the sum of its proper divisors (298664900).

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

268672780 is a wasteful number, since it uses less digits than its factorization.

268672780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74409 (or 74407 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 268672780 is about 16391.2409536313. The cubic root of 268672780 is about 645.2696266721.

It can be divided in two parts, 2686 and 72780, that added together give a triangular number (75466 = T₃₈₈).

The spelling of 268672780 in words is "two hundred sixty-eight million, six hundred seventy-two thousand, seven hundred eighty".