129891024 has 60 divisors (see below), whose sum is σ = 368967456. Its totient is φ = 42647616.

The previous prime is 129891001. The next prime is 129891043. The reversal of 129891024 is 420198921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 129891024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2917 + ... + 16379.

Almost surely, 2^129891024 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 129891024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184483728).

129891024 is an abundant number, since it is smaller than the sum of its proper divisors (239076432).

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

129891024 is a wasteful number, since it uses less digits than its factorization.

129891024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13544 (or 13535 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 129891024 is about 11396.9743353225. The cubic root of 129891024 is about 506.4381109806.

The spelling of 129891024 in words is "one hundred twenty-nine million, eight hundred ninety-one thousand, twenty-four".