129732908 has 6 divisors (see below), whose sum is σ = 227032596. Its totient is φ = 64866452.

The previous prime is 129732887. The next prime is 129732919. The reversal of 129732908 is 809237921.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16216610 + ... + 16216617.

It is an arithmetic number, because the mean of its divisors is an integer number (37838766).

Almost surely, 2^129732908 is an apocalyptic number.

It is an amenable number.

129732908 is a deficient number, since it is larger than the sum of its proper divisors (97299688).

129732908 is a wasteful number, since it uses less digits than its factorization.

129732908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32433231 (or 32433229 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 129732908 is about 11390.0354696550. The cubic root of 129732908 is about 506.2325322835.

The spelling of 129732908 in words is "one hundred twenty-nine million, seven hundred thirty-two thousand, nine hundred eight".