12640982 has 8 divisors (see below), whose sum is σ = 19228752. Its totient is φ = 6231400.

The previous prime is 12640973. The next prime is 12640993. The reversal of 12640982 is 28904621.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 44369 + ... + 44652.

It is an arithmetic number, because the mean of its divisors is an integer number (2403594).

Almost surely, 2^12640982 is an apocalyptic number.

12640982 is a deficient number, since it is larger than the sum of its proper divisors (6587770).

12640982 is an equidigital number, since it uses as much as digits as its factorization.

12640982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89094.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 12640982 is about 3555.4158687838. The cubic root of 12640982 is about 232.9486891746.

The spelling of 12640982 in words is "twelve million, six hundred forty thousand, nine hundred eighty-two".