129846080 has 210 divisors, whose sum is σ = 390588246. Its totient is φ = 41094144.

The previous prime is 129846047. The next prime is 129846089. The reversal of 129846080 is 80648921.

It can be written as a sum of positive squares in 3 ways, for example, as 614656 + 129231424 = 784^2 + 11368^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129846089) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9988154 + ... + 9988166.

Almost surely, 2^129846080 is an apocalyptic number.

129846080 is a gapful number since it is divisible by the number (10) 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 129846080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195294123).

129846080 is an abundant number, since it is smaller than the sum of its proper divisors (260742166).

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

129846080 is an frugal number, since it uses more digits than its factorization.

129846080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 129846080 is about 11395.0024133389. The cubic root of 129846080 is about 506.3796928300.

The spelling of 129846080 in words is "one hundred twenty-nine million, eight hundred forty-six thousand, eighty".