280486 has 8 divisors (see below), whose sum is σ = 428040. Its totient is φ = 137808.

The previous prime is 280463. The next prime is 280487. The reversal of 280486 is 684082.

280486 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280487) 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, 1071 + ... + 1306.

It is an arithmetic number, because the mean of its divisors is an integer number (53505).

2²⁸⁰⁴⁸⁶ is an apocalyptic number.

280486 is a deficient number, since it is larger than the sum of its proper divisors (147554).

280486 is a wasteful number, since it uses less digits than its factorization.

280486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 280486 is about 529.6092899487. The cubic root of 280486 is about 65.4591552356.

The spelling of 280486 in words is "two hundred eighty thousand, four hundred eighty-six".