266794740 has 36 divisors (see below), whose sum is σ = 809277924. Its totient is φ = 71145216.

The previous prime is 266794729. The next prime is 266794741. The reversal of 266794740 is 47497662.

It can be written as a sum of positive squares in 2 ways, for example, as 99920016 + 166874724 = 9996^2 + 12918^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266794741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740917 + ... + 741276.

Almost surely, 2^266794740 is an apocalyptic number.

266794740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266794740 is an abundant number, since it is smaller than the sum of its proper divisors (542483184).

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

266794740 is a wasteful number, since it uses less digits than its factorization.

266794740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482208 (or 1482203 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 266794740 is about 16333.8525767805. The cubic root of 266794740 is about 643.7626177814.

The spelling of 266794740 in words is "two hundred sixty-six million, seven hundred ninety-four thousand, seven hundred forty".