266890734 has 32 divisors (see below), whose sum is σ = 647009280. Its totient is φ = 80875800.

The previous prime is 266890721. The next prime is 266890753. The reversal of 266890734 is 437098662.

It is a self number, because there is not a number n which added to its sum of digits gives 266890734.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 224062 + ... + 225249.

It is an arithmetic number, because the mean of its divisors is an integer number (20219040).

Almost surely, 2^266890734 is an apocalyptic number.

266890734 is an abundant number, since it is smaller than the sum of its proper divisors (380118546).

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

266890734 is a wasteful number, since it uses less digits than its factorization.

266890734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449333 (or 449327 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 266890734 is about 16336.7908109273. The cubic root of 266890734 is about 643.8398181272.

The spelling of 266890734 in words is "two hundred sixty-six million, eight hundred ninety thousand, seven hundred thirty-four".