628284286 has 32 divisors (see below), whose sum is σ = 1146528000. Its totient is φ = 252217152.

The previous prime is 628284271. The next prime is 628284289. The reversal of 628284286 is 682482826.

It is a super-2 number, since 2×628284286² = 789482288069059592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628284289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10405 + ... + 36943.

It is an arithmetic number, because the mean of its divisors is an integer number (35829000).

Almost surely, 2^628284286 is an apocalyptic number.

628284286 is a deficient number, since it is larger than the sum of its proper divisors (518243714).

628284286 is a wasteful number, since it uses less digits than its factorization.

628284286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26656.

The product of its digits is 589824, while the sum is 46.

The square root of 628284286 is about 25065.5996537087. The cubic root of 628284286 is about 856.4829710714.

The spelling of 628284286 in words is "six hundred twenty-eight million, two hundred eighty-four thousand, two hundred eighty-six".