12338457 has 12 divisors (see below), whose sum is σ = 16687440. Its totient is φ = 8109192.

The previous prime is 12338449. The next prime is 12338479. The reversal of 12338457 is 75483321.

It is not a de Polignac number, because 12338457 - 2³ = 12338449 is a prime.

It is a super-2 number, since 2×12338457² = 304475042281698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12338437) 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 11 ways as a sum of consecutive naturals, for example, 18394 + ... + 19052.

It is an arithmetic number, because the mean of its divisors is an integer number (1390620).

Almost surely, 2^12338457 is an apocalyptic number.

It is an amenable number.

12338457 is a deficient number, since it is larger than the sum of its proper divisors (4348983).

12338457 is an frugal number, since it uses more digits than its factorization.

12338457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 741 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 12338457 is about 3512.6139839157. The cubic root of 12338457 is about 231.0753488197.

The spelling of 12338457 in words is "twelve million, three hundred thirty-eight thousand, four hundred fifty-seven".