129845320 has 64 divisors (see below), whose sum is σ = 337478400. Its totient is φ = 44436480.

The previous prime is 129845293. The next prime is 129845333. The reversal of 129845320 is 23548921.

129845320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

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 15 ways as a sum of consecutive naturals, for example, 1200 + ... + 16159.

It is an arithmetic number, because the mean of its divisors is an integer number (5273100).

Almost surely, 2^129845320 is an apocalyptic number.

129845320 is a gapful number since it is divisible by the number (10) 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 129845320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168739200).

129845320 is an abundant number, since it is smaller than the sum of its proper divisors (207633080).

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

129845320 is a wasteful number, since it uses less digits than its factorization.

129845320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17398 (or 17394 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 129845320 is about 11394.9690653376. The cubic root of 129845320 is about 506.3787048672.

The spelling of 129845320 in words is "one hundred twenty-nine million, eight hundred forty-five thousand, three hundred twenty".