129648472 has 8 divisors (see below), whose sum is σ = 243090900. Its totient is φ = 64824232.

The previous prime is 129648461. The next prime is 129648499. The reversal of 129648472 is 274846921.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8103022 + ... + 8103037.

Almost surely, 2^129648472 is an apocalyptic number.

It is an amenable number.

129648472 is a deficient number, since it is larger than the sum of its proper divisors (113442428).

129648472 is a wasteful number, since it uses less digits than its factorization.

129648472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16206065 (or 16206061 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 129648472 is about 11386.3282931769. The cubic root of 129648472 is about 506.1226821630.

The spelling of 129648472 in words is "one hundred twenty-nine million, six hundred forty-eight thousand, four hundred seventy-two".