128929683 has 8 divisors (see below), whose sum is σ = 182018448. Its totient is φ = 80897024.

The previous prime is 128929667. The next prime is 128929693. The reversal of 128929683 is 386929821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128929683 - 2⁴ = 128929667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128929663) 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, 1263966 + ... + 1264067.

It is an arithmetic number, because the mean of its divisors is an integer number (22752306).

Almost surely, 2^128929683 is an apocalyptic number.

128929683 is a deficient number, since it is larger than the sum of its proper divisors (53088765).

128929683 is a wasteful number, since it uses less digits than its factorization.

128929683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528053.

The product of its digits is 373248, while the sum is 48.

The square root of 128929683 is about 11354.7207363281. The cubic root of 128929683 is about 505.1856102997.

The spelling of 128929683 in words is "one hundred twenty-eight million, nine hundred twenty-nine thousand, six hundred eighty-three".