129392648 has 32 divisors (see below), whose sum is σ = 302477760. Its totient is φ = 50412480.

The previous prime is 129392629. The next prime is 129392699. The reversal of 129392648 is 846293921.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 129392599 and 129392608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104411 + ... + 105642.

It is an arithmetic number, because the mean of its divisors is an integer number (9452430).

Almost surely, 2^129392648 is an apocalyptic number.

It is an amenable number.

129392648 is an abundant number, since it is smaller than the sum of its proper divisors (173085112).

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

129392648 is a wasteful number, since it uses less digits than its factorization.

129392648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210077 (or 210073 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 129392648 is about 11375.0889227294. The cubic root of 129392648 is about 505.7895670781.

The spelling of 129392648 in words is "one hundred twenty-nine million, three hundred ninety-two thousand, six hundred forty-eight".