12307457 has 8 divisors (see below), whose sum is σ = 12520872. Its totient is φ = 12096000.

The previous prime is 12307453. The next prime is 12307469. The reversal of 12307457 is 75470321.

It can be written as a sum of positive squares in 4 ways, for example, as 638401 + 11669056 = 799^2 + 3416^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12307457 - 2² = 12307453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12307453) 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, 17207 + ... + 17907.

It is an arithmetic number, because the mean of its divisors is an integer number (1565109).

Almost surely, 2^12307457 is an apocalyptic number.

It is an amenable number.

12307457 is a deficient number, since it is larger than the sum of its proper divisors (213415).

12307457 is an equidigital number, since it uses as much as digits as its factorization.

12307457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 12307457 is about 3508.1985405618. The cubic root of 12307457 is about 230.8816632445.

Adding to 12307457 its reverse (75470321), we get a palindrome (87777778).

The spelling of 12307457 in words is "twelve million, three hundred seven thousand, four hundred fifty-seven".