12936457 has 4 divisors (see below), whose sum is σ = 12950676. Its totient is φ = 12922240.

The previous prime is 12936449. The next prime is 12936461. The reversal of 12936457 is 75463921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12595401 + 341056 = 3549^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 12936457 - 2³ = 12936449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12936437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5644 + ... + 7597.

It is an arithmetic number, because the mean of its divisors is an integer number (3237669).

Almost surely, 2^12936457 is an apocalyptic number.

It is an amenable number.

12936457 is a deficient number, since it is larger than the sum of its proper divisors (14219).

12936457 is an equidigital number, since it uses as much as digits as its factorization.

12936457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14218.

The product of its digits is 45360, while the sum is 37.

The square root of 12936457 is about 3596.7286525397. The cubic root of 12936457 is about 234.7497381066.

It can be divided in two parts, 1293 and 6457, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 12936457 in words is "twelve million, nine hundred thirty-six thousand, four hundred fifty-seven".