12457682 has 4 divisors (see below), whose sum is σ = 18686526. Its totient is φ = 6228840.

The previous prime is 12457681. The next prime is 12457693. The reversal of 12457682 is 28675421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28675421 = 83 ⋅345487.

It can be written as a sum of positive squares in only one way, i.e., 8300161 + 4157521 = 2881^2 + 2039^2 .

It is not an unprimeable number, because it can be changed into a prime (12457681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3114419 + ... + 3114422.

Almost surely, 2^12457682 is an apocalyptic number.

12457682 is a deficient number, since it is larger than the sum of its proper divisors (6228844).

12457682 is an equidigital number, since it uses as much as digits as its factorization.

12457682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228843.

The product of its digits is 26880, while the sum is 35.

The square root of 12457682 is about 3529.5441632029. The cubic root of 12457682 is about 231.8172485696.

The spelling of 12457682 in words is "twelve million, four hundred fifty-seven thousand, six hundred eighty-two".