130128834 has 64 divisors (see below), whose sum is σ = 306270720. Its totient is φ = 36432000.

The previous prime is 130128827. The next prime is 130128839. The reversal of 130128834 is 438821031.

It is not an unprimeable number, because it can be changed into a prime (130128839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50149 + ... + 52679.

It is an arithmetic number, because the mean of its divisors is an integer number (4785480).

Almost surely, 2^130128834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130128834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153135360).

130128834 is an abundant number, since it is smaller than the sum of its proper divisors (176141886).

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

130128834 is a wasteful number, since it uses less digits than its factorization.

130128834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 130128834 is about 11407.4025965598. The cubic root of 130128834 is about 506.7469920163.

Adding to 130128834 its reverse (438821031), we get a palindrome (568949865).

It can be divided in two parts, 1301 and 28834, that added together give a triangular number (30135 = T₂₄₅).

The spelling of 130128834 in words is "one hundred thirty million, one hundred twenty-eight thousand, eight hundred thirty-four".