286738 has 8 divisors (see below), whose sum is σ = 432432. Its totient is φ = 142596.

The previous prime is 286733. The next prime is 286751. The reversal of 286738 is 837682.

It is a happy number.

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

It is a d-powerful number, because it can be written as 2⁶ + 8² + 7² + 6⁷ + 3⁸ + 8² .

It is not an unprimeable number, because it can be changed into a prime (286733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381 + ... + 847.

It is an arithmetic number, because the mean of its divisors is an integer number (54054).

2²⁸⁶⁷³⁸ is an apocalyptic number.

286738 is a deficient number, since it is larger than the sum of its proper divisors (145694).

286738 is a wasteful number, since it uses less digits than its factorization.

286738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776.

The product of its digits is 16128, while the sum is 34.

The square root of 286738 is about 535.4792246203. The cubic root of 286738 is about 65.9419446627.

It can be divided in two parts, 286 and 738, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 286738 in words is "two hundred eighty-six thousand, seven hundred thirty-eight".