628439000 has 128 divisors (see below), whose sum is σ = 1779822720. Its totient is φ = 202752000.

The previous prime is 628438997. The next prime is 628439011. The reversal of 628439000 is 934826.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116360 + ... + 121640.

It is an arithmetic number, because the mean of its divisors is an integer number (13904865).

Almost surely, 2^628439000 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 628439000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (889911360).

628439000 is an abundant number, since it is smaller than the sum of its proper divisors (1151383720).

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

628439000 is a wasteful number, since it uses less digits than its factorization.

628439000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326 (or 5312 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 628439000 is about 25068.6856456417. The cubic root of 628439000 is about 856.5532678219.

The spelling of 628439000 in words is "six hundred twenty-eight million, four hundred thirty-nine thousand".