276808 has 16 divisors (see below), whose sum is σ = 593280. Its totient is φ = 118608.

The previous prime is 276781. The next prime is 276817. The reversal of 276808 is 808672.

It is a self number, because there is not a number n which added to its sum of digits gives 276808.

It is an unprimeable number.

276808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2416 + ... + 2527.

It is an arithmetic number, because the mean of its divisors is an integer number (37080).

2²⁷⁶⁸⁰⁸ is an apocalyptic number.

276808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

276808 is an abundant number, since it is smaller than the sum of its proper divisors (316472).

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

276808 is a wasteful number, since it uses less digits than its factorization.

276808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4956 (or 4952 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 276808 is about 526.1254603229. The cubic root of 276808 is about 65.1717744514.

The spelling of 276808 in words is "two hundred seventy-six thousand, eight hundred eight".