286628648 has 16 divisors (see below), whose sum is σ = 537976500. Its totient is φ = 143168256.

The previous prime is 286628627. The next prime is 286628651. The reversal of 286628648 is 846826682.

It can be written as a sum of positive squares in 2 ways, for example, as 256576324 + 30052324 = 16018^2 + 5482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 286628596 and 286628605.

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, 9683 + ... + 25826.

Almost surely, 2^286628648 is an apocalyptic number.

It is an amenable number.

286628648 is a deficient number, since it is larger than the sum of its proper divisors (251347852).

286628648 is a wasteful number, since it uses less digits than its factorization.

286628648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36524 (or 36520 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 50.

The square root of 286628648 is about 16930.1106907191. The cubic root of 286628648 is about 659.3356093447.

The spelling of 286628648 in words is "two hundred eighty-six million, six hundred twenty-eight thousand, six hundred forty-eight".