12399730 has 32 divisors (see below), whose sum is σ = 25635456. Its totient is φ = 4230144.

The previous prime is 12399727. The next prime is 12399763. The reversal of 12399730 is 3799321.

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 15 ways as a sum of consecutive naturals, for example, 21202 + ... + 21778.

It is an arithmetic number, because the mean of its divisors is an integer number (801108).

Almost surely, 2^12399730 is an apocalyptic number.

12399730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12399730 is an abundant number, since it is smaller than the sum of its proper divisors (13235726).

12399730 is a wasteful number, since it uses less digits than its factorization.

12399730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 12399730 is about 3521.3250346993. The cubic root of 12399730 is about 231.4572254967.

The spelling of 12399730 in words is "twelve million, three hundred ninety-nine thousand, seven hundred thirty".