286646140 has 24 divisors (see below), whose sum is σ = 656680752. Its totient is φ = 104234880.

The previous prime is 286646089. The next prime is 286646147. The reversal of 286646140 is 41646682.

286646140 is nontrivially palindromic in base 6.

286646140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 286646140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286646147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651249 + ... + 651688.

It is an arithmetic number, because the mean of its divisors is an integer number (27361698).

Almost surely, 2^286646140 is an apocalyptic number.

286646140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286646140 is an abundant number, since it is smaller than the sum of its proper divisors (370034612).

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

286646140 is a wasteful number, since it uses less digits than its factorization.

286646140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302957 (or 1302955 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 286646140 is about 16930.6272772157. The cubic root of 286646140 is about 659.3490214303.

The spelling of 286646140 in words is "two hundred eighty-six million, six hundred forty-six thousand, one hundred forty".