12618730 has 16 divisors (see below), whose sum is σ = 22949640. Its totient is φ = 4995072.

The previous prime is 12618721. The next prime is 12618731. The reversal of 12618730 is 3781621.

It can be written as a sum of positive squares in 4 ways, for example, as 7991929 + 4626801 = 2827^2 + 2151^2 .

It is not an unprimeable number, because it can be changed into a prime (12618731) 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, 5535 + ... + 7474.

Almost surely, 2^12618730 is an apocalyptic number.

12618730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12618730 is a deficient number, since it is larger than the sum of its proper divisors (10330910).

12618730 is a wasteful number, since it uses less digits than its factorization.

12618730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13113.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12618730 is about 3552.2851799933. The cubic root of 12618730 is about 232.8119218790.

The spelling of 12618730 in words is "twelve million, six hundred eighteen thousand, seven hundred thirty".