628148 has 6 divisors (see below), whose sum is σ = 1099266. Its totient is φ = 314072.

The previous prime is 628139. The next prime is 628171. The reversal of 628148 is 841826.

628148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 559504 + 68644 = 748^2 + 262^2 .

It is a super-3 number, since 3×628148³ = 743544899299133376, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 628148.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 628148.

It is an unprimeable number.

628148 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78515 + ... + 78522.

It is an arithmetic number, because the mean of its divisors is an integer number (183211).

2⁶²⁸¹⁴⁸ is an apocalyptic number.

It is an amenable number.

628148 is a deficient number, since it is larger than the sum of its proper divisors (471118).

628148 is a wasteful number, since it uses less digits than its factorization.

628148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157041 (or 157039 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 628148 is about 792.5578843214. The cubic root of 628148 is about 85.6421037813.

The spelling of 628148 in words is "six hundred twenty-eight thousand, one hundred forty-eight".