12729992 has 16 divisors (see below), whose sum is σ = 26038800. Its totient is φ = 5786320.

The previous prime is 12729979. The next prime is 12730007. The reversal of 12729992 is 29992721.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72242 + ... + 72417.

It is an arithmetic number, because the mean of its divisors is an integer number (1627425).

Almost surely, 2^12729992 is an apocalyptic number.

It is an amenable number.

12729992 is an abundant number, since it is smaller than the sum of its proper divisors (13308808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12729992 is a wasteful number, since it uses less digits than its factorization.

12729992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144676 (or 144672 counting only the distinct ones).

The product of its digits is 40824, while the sum is 41.

The square root of 12729992 is about 3567.9114338784. The cubic root of 12729992 is about 233.4941711943.

The spelling of 12729992 in words is "twelve million, seven hundred twenty-nine thousand, nine hundred ninety-two".