628937140 has 48 divisors (see below), whose sum is σ = 1424521728. Its totient is φ = 231871104.

The previous prime is 628937131. The next prime is 628937149. The reversal of 628937140 is 41739826.

It is an interprime number because it is at equal distance from previous prime (628937131) and next prime (628937149).

It is a junction number, because it is equal to n+sod(n) for n = 628937093 and 628937102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628937149) 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, 222979 + ... + 225781.

It is an arithmetic number, because the mean of its divisors is an integer number (29677536).

Almost surely, 2^628937140 is an apocalyptic number.

It is an amenable number.

628937140 is an abundant number, since it is smaller than the sum of its proper divisors (795584588).

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

628937140 is a wasteful number, since it uses less digits than its factorization.

628937140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688 (or 3686 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 628937140 is about 25078.6191804892. The cubic root of 628937140 is about 856.7795272551.

The spelling of 628937140 in words is "six hundred twenty-eight million, nine hundred thirty-seven thousand, one hundred forty".