129823832 has 32 divisors (see below), whose sum is σ = 258390000. Its totient is φ = 60939264.

The previous prime is 129823831. The next prime is 129823843. The reversal of 129823832 is 238328921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129823831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66908 + ... + 68820.

Almost surely, 2^129823832 is an apocalyptic number.

It is an amenable number.

129823832 is a deficient number, since it is larger than the sum of its proper divisors (128566168).

129823832 is a wasteful number, since it uses less digits than its factorization.

129823832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435 (or 2431 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 129823832 is about 11394.0261540862. The cubic root of 129823832 is about 506.3507699214.

The spelling of 129823832 in words is "one hundred twenty-nine million, eight hundred twenty-three thousand, eight hundred thirty-two".