280976 has 20 divisors (see below), whose sum is σ = 576972. Its totient is φ = 132096.

The previous prime is 280967. The next prime is 280979. The reversal of 280976 is 679082.

It can be written as a sum of positive squares in 2 ways, for example, as 250000 + 30976 = 500^2 + 176^2 .

It is a d-powerful number, because it can be written as 2⁹ + 8³ + 9 + 0 + 7 + 6⁷ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280976.

It is not an unprimeable number, because it can be changed into a prime (280979) 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, 245 + ... + 788.

2²⁸⁰⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

280976 is an abundant number, since it is smaller than the sum of its proper divisors (295996).

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

280976 is a wasteful number, since it uses less digits than its factorization.

280976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 280976 is about 530.0716932642. The cubic root of 280976 is about 65.4972514046.

The spelling of 280976 in words is "two hundred eighty thousand, nine hundred seventy-six".