28760368309 has 2 divisors, whose sum is σ = 28760368310. Its totient is φ = 28760368308.

The previous prime is 28760368303. The next prime is 28760368319. The reversal of 28760368309 is 90386306782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21229947025 + 7530421284 = 145705^2 + 86778^2 .

It is a cyclic number.

It is not a de Polignac number, because 28760368309 - 2⁷ = 28760368181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28760368303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14380184154 + 14380184155.

It is an arithmetic number, because the mean of its divisors is an integer number (14380184155).

Almost surely, 2^28760368309 is an apocalyptic number.

It is an amenable number.

28760368309 is a deficient number, since it is larger than the sum of its proper divisors (1).

28760368309 is an equidigital number, since it uses as much as digits as its factorization.

28760368309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 28760368309 in words is "twenty-eight billion, seven hundred sixty million, three hundred sixty-eight thousand, three hundred nine".