129482920 has 64 divisors (see below), whose sum is σ = 341107200. Its totient is φ = 43307520.

The previous prime is 129482861. The next prime is 129482921. The reversal of 129482920 is 29284921.

It is a self number, because there is not a number n which added to its sum of digits gives 129482920.

It is not an unprimeable number, because it can be changed into a prime (129482921) 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, 5841 + ... + 17119.

It is an arithmetic number, because the mean of its divisors is an integer number (5329800).

Almost surely, 2^129482920 is an apocalyptic number.

129482920 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 129482920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170553600).

129482920 is an abundant number, since it is smaller than the sum of its proper divisors (211624280).

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

129482920 is a wasteful number, since it uses less digits than its factorization.

129482920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11338 (or 11334 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 129482920 is about 11379.0561998788. The cubic root of 129482920 is about 505.9071626874.

The spelling of 129482920 in words is "one hundred twenty-nine million, four hundred eighty-two thousand, nine hundred twenty".