286009840 has 40 divisors (see below), whose sum is σ = 665783280. Its totient is φ = 114264576.

The previous prime is 286009837. The next prime is 286009847. The reversal of 286009840 is 48900682.

286009840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 286009840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286009847) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 86131 + ... + 89389.

It is an arithmetic number, because the mean of its divisors is an integer number (16644582).

Almost surely, 2^286009840 is an apocalyptic number.

286009840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286009840 is an abundant number, since it is smaller than the sum of its proper divisors (379773440).

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

286009840 is a wasteful number, since it uses less digits than its factorization.

286009840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369 (or 4363 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 286009840 is about 16911.8254484843. The cubic root of 286009840 is about 658.8607834451.

The spelling of 286009840 in words is "two hundred eighty-six million, nine thousand, eight hundred forty".