129285804 has 48 divisors (see below), whose sum is σ = 319939200. Its totient is φ = 40519296.

The previous prime is 129285797. The next prime is 129285809. The reversal of 129285804 is 408582921.

It is not an unprimeable number, because it can be changed into a prime (129285809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29167 + ... + 33305.

It is an arithmetic number, because the mean of its divisors is an integer number (6665400).

Almost surely, 2^129285804 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 129285804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159969600).

129285804 is an abundant number, since it is smaller than the sum of its proper divisors (190653396).

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

129285804 is a wasteful number, since it uses less digits than its factorization.

129285804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302 (or 4300 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 129285804 is about 11370.3915499863. The cubic root of 129285804 is about 505.6503127424.

The spelling of 129285804 in words is "one hundred twenty-nine million, two hundred eighty-five thousand, eight hundred four".