628396284 has 24 divisors (see below), whose sum is σ = 1475042688. Its totient is φ = 208210480.

The previous prime is 628396261. The next prime is 628396289. The reversal of 628396284 is 482693826.

628396284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628396289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154782 + ... + 158789.

It is an arithmetic number, because the mean of its divisors is an integer number (61460112).

Almost surely, 2^628396284 is an apocalyptic number.

It is an amenable number.

628396284 is an abundant number, since it is smaller than the sum of its proper divisors (846646404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628396284 is a wasteful number, since it uses less digits than its factorization.

628396284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313745 (or 313743 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 628396284 is about 25067.8336519134. The cubic root of 628396284 is about 856.5338602855.

The spelling of 628396284 in words is "six hundred twenty-eight million, three hundred ninety-six thousand, two hundred eighty-four".