286378 has 12 divisors (see below), whose sum is σ = 446850. Its totient is φ = 137640.

The previous prime is 286369. The next prime is 286381. The reversal of 286378 is 873682.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 277729 + 8649 = 527^2 + 93^2 .

It is a d-powerful number, because it can be written as 2¹⁴ + 8² + 3 + 6⁵ + 7 + 8⁶ .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1848 + ... + 1996.

2²⁸⁶³⁷⁸ is an apocalyptic number.

286378 is a deficient number, since it is larger than the sum of its proper divisors (160472).

286378 is a wasteful number, since it uses less digits than its factorization.

286378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 182 counting only the distinct ones).

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

The square root of 286378 is about 535.1429715506. The cubic root of 286378 is about 65.9143363677.

The spelling of 286378 in words is "two hundred eighty-six thousand, three hundred seventy-eight".