130720 has 48 divisors (see below), whose sum is σ = 332640. Its totient is φ = 48384.

The previous prime is 130699. The next prime is 130729. The reversal of 130720 is 27031.

It is a self number, because there is not a number n which added to its sum of digits gives 130720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130729) by changing a digit.

130720 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3019 + ... + 3061.

It is an arithmetic number, because the mean of its divisors is an integer number (6930).

2¹³⁰⁷²⁰ is an apocalyptic number.

130720 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 130720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166320).

130720 is an abundant number, since it is smaller than the sum of its proper divisors (201920).

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

130720 is a wasteful number, since it uses less digits than its factorization.

130720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 130720 is about 361.5522092313. The cubic root of 130720 is about 50.7513204701.

Adding to 130720 its reverse (27031), we get a palindrome (157751).

The spelling of 130720 in words is "one hundred thirty thousand, seven hundred twenty".