628525284 has 24 divisors (see below), whose sum is σ = 1471253280. Its totient is φ = 208837824.

The previous prime is 628525231. The next prime is 628525291. The reversal of 628525284 is 482525826.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79914 + ... + 87425.

It is an arithmetic number, because the mean of its divisors is an integer number (61302220).

Almost surely, 2^628525284 is an apocalyptic number.

It is an amenable number.

628525284 is an abundant number, since it is smaller than the sum of its proper divisors (842727996).

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

628525284 is a wasteful number, since it uses less digits than its factorization.

628525284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167659 (or 167657 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 628525284 is about 25070.4065383870. The cubic root of 628525284 is about 856.5924673093.

The spelling of 628525284 in words is "six hundred twenty-eight million, five hundred twenty-five thousand, two hundred eighty-four".