129948380 has 24 divisors (see below), whose sum is σ = 273109200. Its totient is φ = 51937920.

The previous prime is 129948349. The next prime is 129948409. The reversal of 129948380 is 83849921.

It is a happy number.

129948380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41096 + ... + 44144.

It is an arithmetic number, because the mean of its divisors is an integer number (11379550).

Almost surely, 2^129948380 is an apocalyptic number.

129948380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129948380 is an abundant number, since it is smaller than the sum of its proper divisors (143160820).

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

129948380 is a wasteful number, since it uses less digits than its factorization.

129948380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5189 (or 5187 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 129948380 is about 11399.4903394845. The cubic root of 129948380 is about 506.5126426636.

The spelling of 129948380 in words is "one hundred twenty-nine million, nine hundred forty-eight thousand, three hundred eighty".