286990 has 16 divisors (see below), whose sum is σ = 563760. Its totient is φ = 104320.

The previous prime is 286987. The next prime is 286999. The reversal of 286990 is 99682.

286990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286999) 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, 1195 + ... + 1414.

It is an arithmetic number, because the mean of its divisors is an integer number (35235).

2²⁸⁶⁹⁹⁰ is an apocalyptic number.

286990 is a deficient number, since it is larger than the sum of its proper divisors (276770).

286990 is a wasteful number, since it uses less digits than its factorization.

286990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 286990 is about 535.7144761904. The cubic root of 286990 is about 65.9612567227.

The spelling of 286990 in words is "two hundred eighty-six thousand, nine hundred ninety".