628793530 has 16 divisors (see below), whose sum is σ = 1147334184. Its totient is φ = 248071680.

The previous prime is 628793513. The next prime is 628793533. The reversal of 628793530 is 35397826.

628793530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 464876721 + 163916809 = 21561^2 + 12803^2 .

It is not an unprimeable number, because it can be changed into a prime (628793533) 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, 429951 + ... + 431410.

Almost surely, 2^628793530 is an apocalyptic number.

628793530 is a deficient number, since it is larger than the sum of its proper divisors (518540654).

628793530 is a wasteful number, since it uses less digits than its factorization.

628793530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861441.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 628793530 is about 25075.7558211114. The cubic root of 628793530 is about 856.7143106294.

The spelling of 628793530 in words is "six hundred twenty-eight million, seven hundred ninety-three thousand, five hundred thirty".