628460 has 36 divisors (see below), whose sum is σ = 1531152. Its totient is φ = 212256.

The previous prime is 628447. The next prime is 628477. The reversal of 628460 is 64826.

628460 is nontrivially palindromic in base 13.

It is an unprimeable number.

628460 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9347 + ... + 9413.

It is an arithmetic number, because the mean of its divisors is an integer number (42532).

2⁶²⁸⁴⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765576).

628460 is an abundant number, since it is smaller than the sum of its proper divisors (902692).

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

628460 is a wasteful number, since it uses less digits than its factorization.

628460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 628460 is about 792.7546909353. The cubic root of 628460 is about 85.6562808614.

The spelling of 628460 in words is "six hundred twenty-eight thousand, four hundred sixty".