286280644 has 12 divisors (see below), whose sum is σ = 539529004. Its totient is φ = 132129504.

The previous prime is 286280639. The next prime is 286280681. The reversal of 286280644 is 446082682.

It can be written as a sum of positive squares in 2 ways, for example, as 193543744 + 92736900 = 13912^2 + 9630^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 286280597 and 286280606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2752647 + ... + 2752750.

Almost surely, 2^286280644 is an apocalyptic number.

It is an amenable number.

286280644 is a deficient number, since it is larger than the sum of its proper divisors (253248360).

286280644 is a wasteful number, since it uses less digits than its factorization.

286280644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505414 (or 5505412 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 286280644 is about 16919.8299045824. The cubic root of 286280644 is about 659.0686619026.

The spelling of 286280644 in words is "two hundred eighty-six million, two hundred eighty thousand, six hundred forty-four".