130720616 has 64 divisors (see below), whose sum is σ = 282502080. Its totient is φ = 56171520.

The previous prime is 130720609. The next prime is 130720643. The reversal of 130720616 is 616027031.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 188831 + ... + 189521.

It is an arithmetic number, because the mean of its divisors is an integer number (4414095).

Almost surely, 2^130720616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130720616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141251040).

130720616 is an abundant number, since it is smaller than the sum of its proper divisors (151781464).

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

130720616 is a wasteful number, since it uses less digits than its factorization.

130720616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 130720616 is about 11433.3116812234. The cubic root of 130720616 is about 507.5140018947.

Adding to 130720616 its reverse (616027031), we get a palindrome (746747647).

The spelling of 130720616 in words is "one hundred thirty million, seven hundred twenty thousand, six hundred sixteen".