280977 has 8 divisors (see below), whose sum is σ = 380064. Its totient is φ = 184608.

The previous prime is 280967. The next prime is 280979. The reversal of 280977 is 779082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 280977 - 2⁶ = 280913 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280977.

It is not an unprimeable number, because it can be changed into a prime (280979) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 423 + ... + 860.

It is an arithmetic number, because the mean of its divisors is an integer number (47508).

2²⁸⁰⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

280977 is a deficient number, since it is larger than the sum of its proper divisors (99087).

280977 is a wasteful number, since it uses less digits than its factorization.

280977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 280977 is about 530.0726365320. The cubic root of 280977 is about 65.4973291066.

The spelling of 280977 in words is "two hundred eighty thousand, nine hundred seventy-seven".