266436 has 24 divisors (see below), whose sum is σ = 691040. Its totient is φ = 88776.

The previous prime is 266417. The next prime is 266447. The reversal of 266436 is 634662.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266436.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126 + ... + 1341.

2²⁶⁶⁴³⁶ is an apocalyptic number.

It is an amenable number.

266436 is an abundant number, since it is smaller than the sum of its proper divisors (424604).

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

266436 is a wasteful number, since it uses less digits than its factorization.

266436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480 (or 2472 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 266436 is about 516.1743891361. The cubic root of 266436 is about 64.3473947685.

The spelling of 266436 in words is "two hundred sixty-six thousand, four hundred thirty-six".