628474284 has 36 divisors (see below), whose sum is σ = 1639892800. Its totient is φ = 202733280.

The previous prime is 628474279. The next prime is 628474291. The reversal of 628474284 is 482474826.

628474284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280459 + ... + 282690.

Almost surely, 2^628474284 is an apocalyptic number.

It is an amenable number.

628474284 is an abundant number, since it is smaller than the sum of its proper divisors (1011418516).

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

628474284 is a wasteful number, since it uses less digits than its factorization.

628474284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563190 (or 563185 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 628474284 is about 25069.3893822726. The cubic root of 628474284 is about 856.5692980491.

It can be divided in two parts, 6284742 and 84, that added together give a palindrome (6284826).

The spelling of 628474284 in words is "six hundred twenty-eight million, four hundred seventy-four thousand, two hundred eighty-four".