628075830 has 32 divisors (see below), whose sum is σ = 1509145344. Its totient is φ = 167290976.

The previous prime is 628075813. The next prime is 628075853. The reversal of 628075830 is 38570826.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14809 + ... + 38411.

It is an arithmetic number, because the mean of its divisors is an integer number (47160792).

Almost surely, 2^628075830 is an apocalyptic number.

628075830 is an abundant number, since it is smaller than the sum of its proper divisors (881069514).

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

628075830 is a wasteful number, since it uses less digits than its factorization.

628075830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24500.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 628075830 is about 25061.4410998250. The cubic root of 628075830 is about 856.3882375421.

The spelling of 628075830 in words is "six hundred twenty-eight million, seventy-five thousand, eight hundred thirty".