12399530 has 96 divisors (see below), whose sum is σ = 28460160. Its totient is φ = 3843840.

The previous prime is 12399503. The next prime is 12399539. The reversal of 12399530 is 3599321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12399539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 427556 + ... + 427584.

It is an arithmetic number, because the mean of its divisors is an integer number (296460).

Almost surely, 2^12399530 is an apocalyptic number.

12399530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12399530 is an abundant number, since it is smaller than the sum of its proper divisors (16060630).

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

12399530 is a wasteful number, since it uses less digits than its factorization.

12399530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 12399530 is about 3521.2966361839. The cubic root of 12399530 is about 231.4559810693.

The spelling of 12399530 in words is "twelve million, three hundred ninety-nine thousand, five hundred thirty".