628917346 has 16 divisors (see below), whose sum is σ = 1000858680. Its totient is φ = 295371520.

The previous prime is 628917323. The next prime is 628917383. The reversal of 628917346 is 643719826.

It can be written as a sum of positive squares in 4 ways, for example, as 625550121 + 3367225 = 25011^2 + 1835^2 .

It is a junction number, because it is equal to n+sod(n) for n = 628917296 and 628917305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865 + ... + 35476.

Almost surely, 2^628917346 is an apocalyptic number.

628917346 is a deficient number, since it is larger than the sum of its proper divisors (371941334).

628917346 is a wasteful number, since it uses less digits than its factorization.

628917346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36869.

The product of its digits is 435456, while the sum is 46.

The square root of 628917346 is about 25078.2245384317. The cubic root of 628917346 is about 856.7705389314.

The spelling of 628917346 in words is "six hundred twenty-eight million, nine hundred seventeen thousand, three hundred forty-six".