130238644 has 12 divisors (see below), whose sum is σ = 228565764. Its totient is φ = 64934144.

The previous prime is 130238587. The next prime is 130238651. The reversal of 130238644 is 446832031.

It can be written as a sum of positive squares in 2 ways, for example, as 52128400 + 78110244 = 7220^2 + 8838^2 .

It is a congruent number.

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, 44707 + ... + 47530.

It is an arithmetic number, because the mean of its divisors is an integer number (19047147).

Almost surely, 2^130238644 is an apocalyptic number.

It is an amenable number.

130238644 is a deficient number, since it is larger than the sum of its proper divisors (98327120).

130238644 is a wasteful number, since it uses less digits than its factorization.

130238644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92594 (or 92592 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 130238644 is about 11412.2146842758. The cubic root of 130238644 is about 506.8894924405.

The spelling of 130238644 in words is "one hundred thirty million, two hundred thirty-eight thousand, six hundred forty-four".