130721160 has 128 divisors (see below), whose sum is σ = 419126400. Its totient is φ = 32501760.

The previous prime is 130721131. The next prime is 130721189. The reversal of 130721160 is 61127031.

It is an interprime number because it is at equal distance from previous prime (130721131) and next prime (130721189).

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 31 ways as a sum of consecutive naturals, for example, 283330 + ... + 283790.

It is an arithmetic number, because the mean of its divisors is an integer number (3274425).

Almost surely, 2^130721160 is an apocalyptic number.

130721160 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 130721160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209563200).

130721160 is an abundant number, since it is smaller than the sum of its proper divisors (288405240).

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

130721160 is a wasteful number, since it uses less digits than its factorization.

130721160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 130721160 is about 11433.3354713312. The cubic root of 130721160 is about 507.5147059082.

Adding to 130721160 its reverse (61127031), we get a palindrome (191848191).

The spelling of 130721160 in words is "one hundred thirty million, seven hundred twenty-one thousand, one hundred sixty".