286480 has 20 divisors (see below), whose sum is σ = 666252. Its totient is φ = 114560.

The previous prime is 286477. The next prime is 286483. The reversal of 286480 is 84682.

It is an interprime number because it is at equal distance from previous prime (286477) and next prime (286483).

It can be written as a sum of positive squares in 2 ways, for example, as 186624 + 99856 = 432^2 + 316^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (286483) 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, 1711 + ... + 1870.

2²⁸⁶⁴⁸⁰ is an apocalyptic number.

286480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286480 is an abundant number, since it is smaller than the sum of its proper divisors (379772).

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

286480 is a wasteful number, since it uses less digits than its factorization.

286480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 3588 counting only the distinct ones).

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

The square root of 286480 is about 535.2382647009. The cubic root of 286480 is about 65.9221610659.

The spelling of 286480 in words is "two hundred eighty-six thousand, four hundred eighty".