129928584 has 32 divisors (see below), whose sum is σ = 336024000. Its totient is φ = 41815872.

The previous prime is 129928583. The next prime is 129928607. The reversal of 129928584 is 485829921.

It is not an unprimeable number, because it can be changed into a prime (129928583) 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, 92644 + ... + 94035.

It is an arithmetic number, because the mean of its divisors is an integer number (10500750).

Almost surely, 2^129928584 is an apocalyptic number.

It is an amenable number.

129928584 is an abundant number, since it is smaller than the sum of its proper divisors (206095416).

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

129928584 is a wasteful number, since it uses less digits than its factorization.

129928584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186717 (or 186713 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 129928584 is about 11398.6220219814. The cubic root of 129928584 is about 506.4869210823.

The spelling of 129928584 in words is "one hundred twenty-nine million, nine hundred twenty-eight thousand, five hundred eighty-four".