130720244 has 6 divisors (see below), whose sum is σ = 228760434. Its totient is φ = 65360120.

The previous prime is 130720229. The next prime is 130720253. The reversal of 130720244 is 442027031.

130720244 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 115820644 + 14899600 = 10762^2 + 3860^2 .

130720244 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16340027 + ... + 16340034.

It is an arithmetic number, because the mean of its divisors is an integer number (38126739).

Almost surely, 2^130720244 is an apocalyptic number.

It is an amenable number.

130720244 is a deficient number, since it is larger than the sum of its proper divisors (98040190).

130720244 is a wasteful number, since it uses less digits than its factorization.

130720244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32680065 (or 32680063 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 130720244 is about 11433.2954129595. The cubic root of 130720244 is about 507.5135204726.

Adding to 130720244 its reverse (442027031), we get a palindrome (572747275).

The spelling of 130720244 in words is "one hundred thirty million, seven hundred twenty thousand, two hundred forty-four".