306486730 has 64 divisors (see below), whose sum is σ = 631929600. Its totient is φ = 106138560.

The previous prime is 306486721. The next prime is 306486731. The reversal of 306486730 is 37684603.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 306486730.

It is not an unprimeable number, because it can be changed into a prime (306486731) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1338256 + ... + 1338484.

It is an arithmetic number, because the mean of its divisors is an integer number (9873900).

Almost surely, 2^306486730 is an apocalyptic number.

306486730 is an abundant number, since it is smaller than the sum of its proper divisors (325442870).

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

306486730 is a wasteful number, since it uses less digits than its factorization.

306486730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 306486730 is about 17506.7624077098. The cubic root of 306486730 is about 674.2235094794.

The spelling of 306486730 in words is "three hundred six million, four hundred eighty-six thousand, seven hundred thirty".