130128340 has 48 divisors (see below), whose sum is σ = 291654720. Its totient is φ = 48625920.

The previous prime is 130128337. The next prime is 130128367. The reversal of 130128340 is 43821031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25395 + ... + 30085.

It is an arithmetic number, because the mean of its divisors is an integer number (6076140).

Almost surely, 2^130128340 is an apocalyptic number.

130128340 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 130128340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145827360).

130128340 is an abundant number, since it is smaller than the sum of its proper divisors (161526380).

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

130128340 is a wasteful number, since it uses less digits than its factorization.

130128340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792 (or 4790 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 130128340 is about 11407.3809439327. The cubic root of 130128340 is about 506.7463507714.

Adding to 130128340 its reverse (43821031), we get a palindrome (173949371).

The spelling of 130128340 in words is "one hundred thirty million, one hundred twenty-eight thousand, three hundred forty".