130720308 has 12 divisors (see below), whose sum is σ = 305014080. Its totient is φ = 43573432.

The previous prime is 130720279. The next prime is 130720309. The reversal of 130720308 is 803027031.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×130720308² = 34175597847229728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130720309) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5446668 + ... + 5446691.

It is an arithmetic number, because the mean of its divisors is an integer number (25417840).

Almost surely, 2^130720308 is an apocalyptic number.

It is an amenable number.

130720308 is an abundant number, since it is smaller than the sum of its proper divisors (174293772).

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

130720308 is a wasteful number, since it uses less digits than its factorization.

130720308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10893366 (or 10893364 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 130720308 is about 11433.2982118022. The cubic root of 130720308 is about 507.5136032980.

Adding to 130720308 its reverse (803027031), we get a palindrome (933747339).

The spelling of 130720308 in words is "one hundred thirty million, seven hundred twenty thousand, three hundred eight".