129526852 has 48 divisors (see below), whose sum is σ = 279925632. Its totient is φ = 51068160.

The previous prime is 129526849. The next prime is 129526853. The reversal of 129526852 is 258625921.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (129526853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189303 + ... + 189985.

It is an arithmetic number, because the mean of its divisors is an integer number (5831784).

Almost surely, 2^129526852 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 129526852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139962816).

129526852 is an abundant number, since it is smaller than the sum of its proper divisors (150398780).

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

129526852 is a wasteful number, since it uses less digits than its factorization.

129526852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 1226 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 129526852 is about 11380.9864247349. The cubic root of 129526852 is about 505.9643722930.

The spelling of 129526852 in words is "one hundred twenty-nine million, five hundred twenty-six thousand, eight hundred fifty-two".