12729974 has 16 divisors (see below), whose sum is σ = 20351088. Its totient is φ = 5951232.

The previous prime is 12729973. The next prime is 12729979. The reversal of 12729974 is 47992721.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12729973) 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 in 7 ways as a sum of consecutive naturals, for example, 4394 + ... + 6690.

It is an arithmetic number, because the mean of its divisors is an integer number (1271943).

Almost surely, 2^12729974 is an apocalyptic number.

12729974 is a deficient number, since it is larger than the sum of its proper divisors (7621114).

12729974 is a wasteful number, since it uses less digits than its factorization.

12729974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479.

The product of its digits is 63504, while the sum is 41.

The square root of 12729974 is about 3567.9089113933. The cubic root of 12729974 is about 233.4940611420.

The spelling of 12729974 in words is "twelve million, seven hundred twenty-nine thousand, nine hundred seventy-four".