12307730 has 16 divisors (see below), whose sum is σ = 22244760. Its totient is φ = 4902912.

The previous prime is 12307703. The next prime is 12307741. The reversal of 12307730 is 3770321.

It can be written as a sum of positive squares in 4 ways, for example, as 10504081 + 1803649 = 3241^2 + 1343^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12307696 and 12307705.

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, 176 + ... + 4964.

Almost surely, 2^12307730 is an apocalyptic number.

12307730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12307730 is a deficient number, since it is larger than the sum of its proper divisors (9937030).

12307730 is a wasteful number, since it uses less digits than its factorization.

12307730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 12307730 is about 3508.2374492044. The cubic root of 12307730 is about 230.8833703458.

The spelling of 12307730 in words is "twelve million, three hundred seven thousand, seven hundred thirty".