12393730 has 16 divisors (see below), whose sum is σ = 23078520. Its totient is φ = 4786432.

The previous prime is 12393683. The next prime is 12393739. The reversal of 12393730 is 3739321.

It can be written as a sum of positive squares in 4 ways, for example, as 11068929 + 1324801 = 3327^2 + 1151^2 .

It is not an unprimeable number, because it can be changed into a prime (12393739) 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, 21079 + ... + 21658.

Almost surely, 2^12393730 is an apocalyptic number.

12393730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12393730 is a deficient number, since it is larger than the sum of its proper divisors (10684790).

12393730 is a wasteful number, since it uses less digits than its factorization.

12393730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42773.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 12393730 is about 3520.4729795867. The cubic root of 12393730 is about 231.4198868501.

The spelling of 12393730 in words is "twelve million, three hundred ninety-three thousand, seven hundred thirty".