130635728 has 10 divisors (see below), whose sum is σ = 253106754. Its totient is φ = 65317856.

The previous prime is 130635721. The next prime is 130635731. The reversal of 130635728 is 827536031.

It can be written as a sum of positive squares in only one way, i.e., 87759424 + 42876304 = 9368^2 + 6548^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130635721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4082351 + ... + 4082382.

Almost surely, 2^130635728 is an apocalyptic number.

It is an amenable number.

130635728 is a deficient number, since it is larger than the sum of its proper divisors (122471026).

130635728 is an equidigital number, since it uses as much as digits as its factorization.

130635728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8164741 (or 8164735 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 130635728 is about 11429.5987681108. The cubic root of 130635728 is about 507.4041207889.

The spelling of 130635728 in words is "one hundred thirty million, six hundred thirty-five thousand, seven hundred twenty-eight".