130728287 has 2 divisors, whose sum is σ = 130728288. Its totient is φ = 130728286.

The previous prime is 130728233. The next prime is 130728313. The reversal of 130728287 is 782827031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 130728287 - 2¹⁶ = 130662751 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130728287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130728887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65364143 + 65364144.

It is an arithmetic number, because the mean of its divisors is an integer number (65364144).

Almost surely, 2^130728287 is an apocalyptic number.

130728287 is a deficient number, since it is larger than the sum of its proper divisors (1).

130728287 is an equidigital number, since it uses as much as digits as its factorization.

130728287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 130728287 is about 11433.6471434097. The cubic root of 130728287 is about 507.5239290811.

The spelling of 130728287 in words is "one hundred thirty million, seven hundred twenty-eight thousand, two hundred eighty-seven".