628830870 has 16 divisors (see below), whose sum is σ = 1509194160. Its totient is φ = 167688224.

The previous prime is 628830847. The next prime is 628830871. The reversal of 628830870 is 78038826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628830871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10480485 + ... + 10480544.

It is an arithmetic number, because the mean of its divisors is an integer number (94324635).

Almost surely, 2^628830870 is an apocalyptic number.

628830870 is an abundant number, since it is smaller than the sum of its proper divisors (880363290).

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

628830870 is a wasteful number, since it uses less digits than its factorization.

628830870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20961039.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 628830870 is about 25076.5003539170. The cubic root of 628830870 is about 856.7312685431.

The spelling of 628830870 in words is "six hundred twenty-eight million, eight hundred thirty thousand, eight hundred seventy".