129636796 has 12 divisors (see below), whose sum is σ = 226976680. Its totient is φ = 64786320.

The previous prime is 129636769. The next prime is 129636799. The reversal of 129636796 is 697636921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129636799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2650 + ... + 16318.

Almost surely, 2^129636796 is an apocalyptic number.

It is an amenable number.

129636796 is a deficient number, since it is larger than the sum of its proper divisors (97339884).

129636796 is a wasteful number, since it uses less digits than its factorization.

129636796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16044 (or 16042 counting only the distinct ones).

The product of its digits is 734832, while the sum is 49.

The square root of 129636796 is about 11385.8155614782. The cubic root of 129636796 is about 506.1074880879.

The spelling of 129636796 in words is "one hundred twenty-nine million, six hundred thirty-six thousand, seven hundred ninety-six".