129806952 has 128 divisors (see below), whose sum is σ = 370016640. Its totient is φ = 37601280.

The previous prime is 129806947. The next prime is 129806953. The reversal of 129806952 is 259608921.

It is not an unprimeable number, because it can be changed into a prime (129806953) 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, 947428 + ... + 947564.

It is an arithmetic number, because the mean of its divisors is an integer number (2890755).

Almost surely, 2^129806952 is an apocalyptic number.

129806952 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 129806952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185008320).

129806952 is an abundant number, since it is smaller than the sum of its proper divisors (240209688).

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

129806952 is a wasteful number, since it uses less digits than its factorization.

129806952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 129806952 is about 11393.2853909660. The cubic root of 129806952 is about 506.3288233309.

The spelling of 129806952 in words is "one hundred twenty-nine million, eight hundred six thousand, nine hundred fifty-two".