628548 has 12 divisors (see below), whose sum is σ = 1466640. Its totient is φ = 209512.

The previous prime is 628547. The next prime is 628561. The reversal of 628548 is 845826.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (628547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26178 + ... + 26201.

It is an arithmetic number, because the mean of its divisors is an integer number (122220).

2⁶²⁸⁵⁴⁸ is an apocalyptic number.

It is an amenable number.

628548 is an abundant number, since it is smaller than the sum of its proper divisors (838092).

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

628548 is a wasteful number, since it uses less digits than its factorization.

628548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52386 (or 52384 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 628548 is about 792.8101916600. The cubic root of 628548 is about 85.6602786767.

It can be divided in two parts, 628 and 548, that added together give a triangular number (1176 = T₄₈).

The spelling of 628548 in words is "six hundred twenty-eight thousand, five hundred forty-eight".