286820648 has 16 divisors (see below), whose sum is σ = 538116480. Its totient is φ = 143322928.

The previous prime is 286820647. The next prime is 286820671. The reversal of 286820648 is 846028682.

It is a junction number, because it is equal to n+sod(n) for n = 286820599 and 286820608.

It is not an unprimeable number, because it can be changed into a prime (286820641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4265 + ... + 24327.

It is an arithmetic number, because the mean of its divisors is an integer number (33632280).

Almost surely, 2^286820648 is an apocalyptic number.

It is an amenable number.

286820648 is a deficient number, since it is larger than the sum of its proper divisors (251295832).

286820648 is a wasteful number, since it uses less digits than its factorization.

286820648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21856 (or 21852 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The square root of 286820648 is about 16935.7801119405. The cubic root of 286820648 is about 659.4827965178.

The spelling of 286820648 in words is "two hundred eighty-six million, eight hundred twenty thousand, six hundred forty-eight".