129544704 has 80 divisors (see below), whose sum is σ = 383502240. Its totient is φ = 43176960.

The previous prime is 129544697. The next prime is 129544729. The reversal of 129544704 is 407445921.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9139 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (4793778).

Almost surely, 2^129544704 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 129544704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191751120).

129544704 is an abundant number, since it is smaller than the sum of its proper divisors (253957536).

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

129544704 is an frugal number, since it uses more digits than its factorization.

129544704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398 (or 9376 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 129544704 is about 11381.7706882541. The cubic root of 129544704 is about 505.9876160217.

The spelling of 129544704 in words is "one hundred twenty-nine million, five hundred forty-four thousand, seven hundred four".