266840812 has 12 divisors (see below), whose sum is σ = 533681680. Its totient is φ = 114360336.

The previous prime is 266840809. The next prime is 266840831. The reversal of 266840812 is 218048662.

266840812 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 4764987 + ... + 4765042.

Almost surely, 2^266840812 is an apocalyptic number.

It is an amenable number.

266840812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

266840812 is a wasteful number, since it uses less digits than its factorization.

266840812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9530040 (or 9530038 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 266840812 is about 16335.2628384119. The cubic root of 266840812 is about 643.7996721404.

The spelling of 266840812 in words is "two hundred sixty-six million, eight hundred forty thousand, eight hundred twelve".