129884328 has 48 divisors (see below), whose sum is σ = 402024480. Its totient is φ = 37109664.

The previous prime is 129884317. The next prime is 129884329. The reversal of 129884328 is 823488921.

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

It is not an unprimeable number, because it can be changed into a prime (129884329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128350 + ... + 129357.

It is an arithmetic number, because the mean of its divisors is an integer number (8375510).

Almost surely, 2^129884328 is an apocalyptic number.

129884328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129884328 is an abundant number, since it is smaller than the sum of its proper divisors (272140152).

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

129884328 is a wasteful number, since it uses less digits than its factorization.

129884328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257726 (or 257719 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 129884328 is about 11396.6805693588. The cubic root of 129884328 is about 506.4294083832.

The spelling of 129884328 in words is "one hundred twenty-nine million, eight hundred eighty-four thousand, three hundred twenty-eight".