129338692 has 24 divisors (see below), whose sum is σ = 258935040. Its totient is φ = 55375680.

The previous prime is 129338663. The next prime is 129338701. The reversal of 129338692 is 296833921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39909 + ... + 43027.

It is an arithmetic number, because the mean of its divisors is an integer number (10788960).

Almost surely, 2^129338692 is an apocalyptic number.

It is an amenable number.

129338692 is an abundant number, since it is smaller than the sum of its proper divisors (129596348).

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

129338692 is a wasteful number, since it uses less digits than its factorization.

129338692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611 (or 4609 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 129338692 is about 11372.7170016668. The cubic root of 129338692 is about 505.7192535106.

The spelling of 129338692 in words is "one hundred twenty-nine million, three hundred thirty-eight thousand, six hundred ninety-two".