628528 has 20 divisors (see below), whose sum is σ = 1230328. Its totient is φ = 311040.

The previous prime is 628499. The next prime is 628547. The reversal of 628528 is 825826.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 628528.

It is an unprimeable number.

628528 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2488 + ... + 2728.

2⁶²⁸⁵²⁸ is an apocalyptic number.

It is an amenable number.

628528 is a deficient number, since it is larger than the sum of its proper divisors (601800).

628528 is a wasteful number, since it uses less digits than its factorization.

628528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 406 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 628528 is about 792.7975782001. The cubic root of 628528 is about 85.6593701151.

It can be divided in two parts, 628 and 528, that added together give a square (1156 = 34²).

The spelling of 628528 in words is "six hundred twenty-eight thousand, five hundred twenty-eight".