129481792 has 112 divisors (see below), whose sum is σ = 307238400. Its totient is φ = 53452800.

The previous prime is 129481787. The next prime is 129481799. The reversal of 129481792 is 297184921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129481799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370834 + ... + 371182.

It is an arithmetic number, because the mean of its divisors is an integer number (2743200).

Almost surely, 2^129481792 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 129481792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153619200).

129481792 is an abundant number, since it is smaller than the sum of its proper divisors (177756608).

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

129481792 is a wasteful number, since it uses less digits than its factorization.

129481792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 410 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 129481792 is about 11379.0066350275. The cubic root of 129481792 is about 505.9056936006.

The spelling of 129481792 in words is "one hundred twenty-nine million, four hundred eighty-one thousand, seven hundred ninety-two".