286318940 has 36 divisors (see below), whose sum is σ = 616320936. Its totient is φ = 111670272.

The previous prime is 286318937. The next prime is 286319009. The reversal of 286318940 is 49813682.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 495932 + ... + 496508.

It is an arithmetic number, because the mean of its divisors is an integer number (17120026).

Almost surely, 2^286318940 is an apocalyptic number.

286318940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 286318940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308160468).

286318940 is an abundant number, since it is smaller than the sum of its proper divisors (330001996).

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

286318940 is an equidigital number, since it uses as much as digits as its factorization.

286318940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 286318940 is about 16920.9615566019. The cubic root of 286318940 is about 659.0980486468.

The spelling of 286318940 in words is "two hundred eighty-six million, three hundred eighteen thousand, nine hundred forty".