12257536 has 18 divisors (see below), whose sum is σ = 24467702. Its totient is φ = 6128640.

The previous prime is 12257533. The next prime is 12257549. The reversal of 12257536 is 63575221.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 313600 = 3456^2 + 560^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12257498 and 12257507.

It is not an unprimeable number, because it can be changed into a prime (12257533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23685 + ... + 24196.

Almost surely, 2^12257536 is an apocalyptic number.

12257536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12257536 is a deficient number, since it is larger than the sum of its proper divisors (12210166).

12257536 is an frugal number, since it uses more digits than its factorization.

12257536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47897 (or 47883 counting only the distinct ones).

The product of its digits is 12600, while the sum is 31.

The square root of 12257536 is about 3501.0764059072. The cubic root of 12257536 is about 230.5690759983.

The spelling of 12257536 in words is "twelve million, two hundred fifty-seven thousand, five hundred thirty-six".