286331540 has 24 divisors (see below), whose sum is σ = 655960032. Its totient is φ = 104120480.

The previous prime is 286331537. The next prime is 286331581. The reversal of 286331540 is 45133682.

286331540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 286331497 and 286331506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650534 + ... + 650973.

It is an arithmetic number, because the mean of its divisors is an integer number (27331668).

Almost surely, 2^286331540 is an apocalyptic number.

286331540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286331540 is an abundant number, since it is smaller than the sum of its proper divisors (369628492).

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

286331540 is a wasteful number, since it uses less digits than its factorization.

286331540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301527 (or 1301525 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 286331540 is about 16921.3338717726. Note that the first 3 decimals coincide. The cubic root of 286331540 is about 659.1077167854.

The spelling of 286331540 in words is "two hundred eighty-six million, three hundred thirty-one thousand, five hundred forty".