286490 has 8 divisors (see below), whose sum is σ = 515700. Its totient is φ = 114592.

The previous prime is 286487. The next prime is 286493. The reversal of 286490 is 94682.

It is an interprime number because it is at equal distance from previous prime (286487) and next prime (286493).

It can be written as a sum of positive squares in 2 ways, for example, as 284089 + 2401 = 533^2 + 49^2 .

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

It is not an unprimeable number, because it can be changed into a prime (286493) 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, 14315 + ... + 14334.

2²⁸⁶⁴⁹⁰ is an apocalyptic number.

286490 is a deficient number, since it is larger than the sum of its proper divisors (229210).

286490 is a wasteful number, since it uses less digits than its factorization.

286490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28656.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 286490 is about 535.2476062534. The cubic root of 286490 is about 65.9229280932.

The spelling of 286490 in words is "two hundred eighty-six thousand, four hundred ninety".