129385488 has 80 divisors (see below), whose sum is σ = 351406080. Its totient is φ = 40943232.

The previous prime is 129385469. The next prime is 129385499. The reversal of 129385488 is 884583921.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179593 + ... + 180311.

It is an arithmetic number, because the mean of its divisors is an integer number (4392576).

Almost surely, 2^129385488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129385488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175703040).

129385488 is an abundant number, since it is smaller than the sum of its proper divisors (222020592).

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

129385488 is a wasteful number, since it uses less digits than its factorization.

129385488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 910 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 129385488 is about 11374.7741955610. The cubic root of 129385488 is about 505.7802375421.

The spelling of 129385488 in words is "one hundred twenty-nine million, three hundred eighty-five thousand, four hundred eighty-eight".