266878256 has 40 divisors (see below), whose sum is σ = 561868800. Its totient is φ = 122333760.

The previous prime is 266878231. The next prime is 266878273. The reversal of 266878256 is 652878662.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4736 + ... + 23583.

It is an arithmetic number, because the mean of its divisors is an integer number (14046720).

Almost surely, 2^266878256 is an apocalyptic number.

It is an amenable number.

266878256 is an abundant number, since it is smaller than the sum of its proper divisors (294990544).

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

266878256 is a wasteful number, since it uses less digits than its factorization.

266878256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28377 (or 28371 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The square root of 266878256 is about 16336.4089077129. The cubic root of 266878256 is about 643.8297841102.

It can be divided in two parts, 26687 and 8256, that added together give a palindrome (34943).

The spelling of 266878256 in words is "two hundred sixty-six million, eight hundred seventy-eight thousand, two hundred fifty-six".