276228 has 18 divisors (see below), whose sum is σ = 698334. Its totient is φ = 92064.

The previous prime is 276209. The next prime is 276229. The reversal of 276228 is 822672.

It can be written as a sum of positive squares in only one way, i.e., 248004 + 28224 = 498^2 + 168^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (276229) by changing a digit.

276228 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 5 ways as a sum of consecutive naturals, for example, 3801 + ... + 3872.

2²⁷⁶²²⁸ is an apocalyptic number.

It is an amenable number.

276228 is an abundant number, since it is smaller than the sum of its proper divisors (422106).

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

276228 is a wasteful number, since it uses less digits than its factorization.

276228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7683 (or 7678 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 276228 is about 525.5739719583. The cubic root of 276228 is about 65.1262241534.

The spelling of 276228 in words is "two hundred seventy-six thousand, two hundred twenty-eight".