628860 has 48 divisors (see below), whose sum is σ = 1806336. Its totient is φ = 163392.

The previous prime is 628841. The next prime is 628861. The reversal of 628860 is 68826.

628860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2709 + ... + 2931.

It is an arithmetic number, because the mean of its divisors is an integer number (37632).

2⁶²⁸⁸⁶⁰ is an apocalyptic number.

628860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903168).

628860 is an abundant number, since it is smaller than the sum of its proper divisors (1177476).

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

628860 is a wasteful number, since it uses less digits than its factorization.

628860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 628860 is about 793.0069356569. The cubic root of 628860 is about 85.6744497429.

The spelling of 628860 in words is "six hundred twenty-eight thousand, eight hundred sixty".