12978674 has 8 divisors (see below), whose sum is σ = 19882368. Its totient is φ = 6351220.

The previous prime is 12978659. The next prime is 12978683. The reversal of 12978674 is 47687921.

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

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, 68942 + ... + 69129.

It is an arithmetic number, because the mean of its divisors is an integer number (2485296).

Almost surely, 2^12978674 is an apocalyptic number.

12978674 is a deficient number, since it is larger than the sum of its proper divisors (6903694).

12978674 is a wasteful number, since it uses less digits than its factorization.

12978674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138120.

The product of its digits is 169344, while the sum is 44.

The square root of 12978674 is about 3602.5926775032. The cubic root of 12978674 is about 235.0048225961.

The spelling of 12978674 in words is "twelve million, nine hundred seventy-eight thousand, six hundred seventy-four".