130720168 has 16 divisors (see below), whose sum is σ = 253552500. Its totient is φ = 63106176.

The previous prime is 130720153. The next prime is 130720181. The reversal of 130720168 is 861027031.

It can be written as a sum of positive squares in 2 ways, for example, as 127193284 + 3526884 = 11278^2 + 1878^2 .

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 3 ways as a sum of consecutive naturals, for example, 281493 + ... + 281956.

Almost surely, 2^130720168 is an apocalyptic number.

It is an amenable number.

130720168 is a deficient number, since it is larger than the sum of its proper divisors (122832332).

130720168 is a wasteful number, since it uses less digits than its factorization.

130720168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563484 (or 563480 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 130720168 is about 11433.2920893328. The cubic root of 130720168 is about 507.5134221175.

Adding to 130720168 its reverse (861027031), we get a palindrome (991747199).

The spelling of 130720168 in words is "one hundred thirty million, seven hundred twenty thousand, one hundred sixty-eight".