628552 has 8 divisors (see below), whose sum is σ = 1178550. Its totient is φ = 314272.

The previous prime is 628547. The next prime is 628561. The reversal of 628552 is 255826.

It can be written as a sum of positive squares in only one way, i.e., 343396 + 285156 = 586^2 + 534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 628552.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39277 + ... + 39292.

2⁶²⁸⁵⁵² is an apocalyptic number.

It is an amenable number.

628552 is a deficient number, since it is larger than the sum of its proper divisors (549998).

628552 is a wasteful number, since it uses less digits than its factorization.

628552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78575 (or 78571 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 628552 is about 792.8127143279. The cubic root of 628552 is about 85.6604603867.

The spelling of 628552 in words is "six hundred twenty-eight thousand, five hundred fifty-two".