130443520 has 72 divisors (see below), whose sum is σ = 315859320. Its totient is φ = 51609600.

The previous prime is 130443517. The next prime is 130443527. The reversal of 130443520 is 25344031.

It can be written as a sum of positive squares in 4 ways, for example, as 31719424 + 98724096 = 5632^2 + 9936^2 .

It is a junction number, because it is equal to n+sod(n) for n = 130443491 and 130443500.

It is not an unprimeable number, because it can be changed into a prime (130443527) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 128776 + ... + 129784.

It is an arithmetic number, because the mean of its divisors is an integer number (4386935).

Almost surely, 2^130443520 is an apocalyptic number.

130443520 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 130443520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157929660).

130443520 is an abundant number, since it is smaller than the sum of its proper divisors (185415800).

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

130443520 is a wasteful number, since it uses less digits than its factorization.

130443520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 130443520 is about 11421.1873288201. The cubic root of 130443520 is about 507.1551460167.

Adding to 130443520 its reverse (25344031), we get a palindrome (155787551).

The spelling of 130443520 in words is "one hundred thirty million, four hundred forty-three thousand, five hundred twenty".