12308457 has 48 divisors (see below), whose sum is σ = 20516352. Its totient is φ = 6531840.

The previous prime is 12308453. The next prime is 12308467. The reversal of 12308457 is 75480321.

It is not a de Polignac number, because 12308457 - 2² = 12308453 is a prime.

It is a super-2 number, since 2×12308457² = 302996227441698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12308453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168573 + ... + 168645.

It is an arithmetic number, because the mean of its divisors is an integer number (427424).

Almost surely, 2^12308457 is an apocalyptic number.

It is an amenable number.

12308457 is a deficient number, since it is larger than the sum of its proper divisors (8207895).

12308457 is a wasteful number, since it uses less digits than its factorization.

12308457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 12308457 is about 3508.3410609574. The cubic root of 12308457 is about 230.8879162398.

Adding to 12308457 its reverse (75480321), we get a palindrome (87788778).

The spelling of 12308457 in words is "twelve million, three hundred eight thousand, four hundred fifty-seven".