129843648 has 294 divisors, whose sum is σ = 443084712. Its totient is φ = 37635840.

The previous prime is 129843631. The next prime is 129843661. The reversal of 129843648 is 846348921.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 5645365 + ... + 5645387.

Almost surely, 2^129843648 is an apocalyptic number.

129843648 is a gapful number since it is divisible by the number (18) 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 129843648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221542356).

129843648 is an abundant number, since it is smaller than the sum of its proper divisors (313241064).

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

129843648 is an equidigital number, since it uses as much as digits as its factorization.

129843648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 39 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 129843648 is about 11394.8956993910. The cubic root of 129843648 is about 506.3765313353.

The spelling of 129843648 in words is "one hundred twenty-nine million, eight hundred forty-three thousand, six hundred forty-eight".