628148140 has 12 divisors (see below), whose sum is σ = 1319111136. Its totient is φ = 251259248.

The previous prime is 628148123. The next prime is 628148141. The reversal of 628148140 is 41841826.

628148140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 628148096 and 628148105.

It is not an unprimeable number, because it can be changed into a prime (628148141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15703684 + ... + 15703723.

It is an arithmetic number, because the mean of its divisors is an integer number (109925928).

Almost surely, 2^628148140 is an apocalyptic number.

It is an amenable number.

628148140 is an abundant number, since it is smaller than the sum of its proper divisors (690962996).

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

628148140 is a wasteful number, since it uses less digits than its factorization.

628148140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31407416 (or 31407414 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 628148140 is about 25062.8837127734. The cubic root of 628148140 is about 856.4211014386.

Adding to 628148140 its reverse (41841826), we get a palindrome (669989966).

The spelling of 628148140 in words is "six hundred twenty-eight million, one hundred forty-eight thousand, one hundred forty".