628920 has 48 divisors (see below), whose sum is σ = 2045160. Its totient is φ = 167616.

The previous prime is 628913. The next prime is 628921. The reversal of 628920 is 29826.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 514 + ... + 1233.

2⁶²⁸⁹²⁰ is an apocalyptic number.

628920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

628920 is an abundant number, since it is smaller than the sum of its proper divisors (1416240).

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

628920 is a wasteful number, since it uses less digits than its factorization.

628920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 628920 is about 793.0447654452. The cubic root of 628920 is about 85.6771744106.

The spelling of 628920 in words is "six hundred twenty-eight thousand, nine hundred twenty".