306530630 has 16 divisors (see below), whose sum is σ = 630577440. Its totient is φ = 105096192.

The previous prime is 306530599. The next prime is 306530639. The reversal of 306530630 is 36035603.

It is a super-2 number, since 2×306530630² = 187922054256393800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 306530630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306530639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2189435 + ... + 2189574.

It is an arithmetic number, because the mean of its divisors is an integer number (39411090).

Almost surely, 2^306530630 is an apocalyptic number.

306530630 is an abundant number, since it is smaller than the sum of its proper divisors (324046810).

306530630 is a wasteful number, since it uses less digits than its factorization.

306530630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379023.

The product of its (nonzero) digits is 4860, while the sum is 26.

The square root of 306530630 is about 17508.0161640318. The cubic root of 306530630 is about 674.2556990177.

The spelling of 306530630 in words is "three hundred six million, five hundred thirty thousand, six hundred thirty".