286996628 has 12 divisors (see below), whose sum is σ = 505444212. Its totient is φ = 142584000.

The previous prime is 286996579. The next prime is 286996631. The reversal of 286996628 is 826699682.

It can be written as a sum of positive squares in 2 ways, for example, as 219395344 + 67601284 = 14812^2 + 8222^2 .

It is a congruent number.

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, 227873 + ... + 229128.

It is an arithmetic number, because the mean of its divisors is an integer number (42120351).

Almost surely, 2^286996628 is an apocalyptic number.

It is an amenable number.

286996628 is a deficient number, since it is larger than the sum of its proper divisors (218447584).

286996628 is a wasteful number, since it uses less digits than its factorization.

286996628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457162 (or 457160 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 56.

The square root of 286996628 is about 16940.9748243718. The cubic root of 286996628 is about 659.6176450790.

The spelling of 286996628 in words is "two hundred eighty-six million, nine hundred ninety-six thousand, six hundred twenty-eight".