266828 has 12 divisors (see below), whose sum is σ = 478632. Its totient is φ = 130080.

The previous prime is 266821. The next prime is 266837. The reversal of 266828 is 828662.

It is a happy number.

It is a d-powerful number, because it can be written as 2¹² + 6 + 8² + 6 + 2¹⁸ + 8³ .

It is a junction number, because it is equal to n+sod(n) for n = 266794 and 266803.

It is not an unprimeable number, because it can be changed into a prime (266821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650 + ... + 977.

It is an arithmetic number, because the mean of its divisors is an integer number (39886).

2²⁶⁶⁸²⁸ is an apocalyptic number.

It is an amenable number.

266828 is a deficient number, since it is larger than the sum of its proper divisors (211804).

266828 is a wasteful number, since it uses less digits than its factorization.

266828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672 (or 1670 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 266828 is about 516.5539662030. The cubic root of 266828 is about 64.3789368253.

The spelling of 266828 in words is "two hundred sixty-six thousand, eight hundred twenty-eight".