129073308 has 96 divisors (see below), whose sum is σ = 390243840. Its totient is φ = 32244480.

The previous prime is 129073303. The next prime is 129073313. The reversal of 129073308 is 803370921.

It is an interprime number because it is at equal distance from previous prime (129073303) and next prime (129073313).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129073303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17638 + ... + 23858.

It is an arithmetic number, because the mean of its divisors is an integer number (4065040).

Almost surely, 2^129073308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129073308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195121920).

129073308 is an abundant number, since it is smaller than the sum of its proper divisors (261170532).

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

129073308 is a wasteful number, since it uses less digits than its factorization.

129073308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267 (or 6265 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 129073308 is about 11361.0434379946. The cubic root of 129073308 is about 505.3731294596.

The spelling of 129073308 in words is "one hundred twenty-nine million, seventy-three thousand, three hundred eight".