628518 has 32 divisors (see below), whose sum is σ = 1399680. Its totient is φ = 186560.

The previous prime is 628499. The next prime is 628547. The reversal of 628518 is 815826.

628518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5821 + ... + 5927.

It is an arithmetic number, because the mean of its divisors is an integer number (43740).

2⁶²⁸⁵¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699840).

628518 is an abundant number, since it is smaller than the sum of its proper divisors (771162).

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

628518 is a wasteful number, since it uses less digits than its factorization.

628518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212.

The product of its digits is 3840, while the sum is 30.

The square root of 628518 is about 792.7912713949. The cubic root of 628518 is about 85.6589158271.

The spelling of 628518 in words is "six hundred twenty-eight thousand, five hundred eighteen".