286940 has 12 divisors (see below), whose sum is σ = 602616. Its totient is φ = 114768.

The previous prime is 286927. The next prime is 286973. The reversal of 286940 is 49682.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 286940.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7154 + ... + 7193.

It is an arithmetic number, because the mean of its divisors is an integer number (50218).

2²⁸⁶⁹⁴⁰ is an apocalyptic number.

286940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286940 is an abundant number, since it is smaller than the sum of its proper divisors (315676).

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

286940 is a wasteful number, since it uses less digits than its factorization.

286940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14356 (or 14354 counting only the distinct ones).

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

The square root of 286940 is about 535.6678075076. The cubic root of 286940 is about 65.9574258640.

The spelling of 286940 in words is "two hundred eighty-six thousand, nine hundred forty".