12307538 has 8 divisors (see below), whose sum is σ = 18480000. Its totient is φ = 6147540.

The previous prime is 12307499. The next prime is 12307567. The reversal of 12307538 is 83570321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12307538.

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 3 ways as a sum of consecutive naturals, for example, 38 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (2310000).

Almost surely, 2^12307538 is an apocalyptic number.

12307538 is a deficient number, since it is larger than the sum of its proper divisors (6172462).

12307538 is a wasteful number, since it uses less digits than its factorization.

12307538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6232.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 12307538 is about 3508.2100849294. The cubic root of 12307538 is about 230.8821697497.

Adding to 12307538 its reverse (83570321), we get a palindrome (95877859).

The spelling of 12307538 in words is "twelve million, three hundred seven thousand, five hundred thirty-eight".