129806712 has 96 divisors (see below), whose sum is σ = 416707200. Its totient is φ = 37083744.

The previous prime is 129806681. The next prime is 129806731. The reversal of 129806712 is 217608921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8839 + ... + 18377.

It is an arithmetic number, because the mean of its divisors is an integer number (4340700).

Almost surely, 2^129806712 is an apocalyptic number.

129806712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129806712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208353600).

129806712 is an abundant number, since it is smaller than the sum of its proper divisors (286900488).

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

129806712 is an equidigital number, since it uses as much as digits as its factorization.

129806712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9567 (or 9551 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 129806712 is about 11393.2748584417. The cubic root of 129806712 is about 506.3285112803.

The spelling of 129806712 in words is "one hundred twenty-nine million, eight hundred six thousand, seven hundred twelve".