129927960 has 96 divisors (see below), whose sum is σ = 426338640. Its totient is φ = 34313472.

The previous prime is 129927949. The next prime is 129927961. The reversal of 129927960 is 69729921.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129927961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36834 + ... + 40206.

Almost surely, 2^129927960 is an apocalyptic number.

129927960 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 129927960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213169320).

129927960 is an abundant number, since it is smaller than the sum of its proper divisors (296410680).

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

129927960 is a wasteful number, since it uses less digits than its factorization.

129927960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 129927960 is about 11398.5946502189. The cubic root of 129927960 is about 506.4861102565.

The spelling of 129927960 in words is "one hundred twenty-nine million, nine hundred twenty-seven thousand, nine hundred sixty".