28560797 has 2 divisors, whose sum is σ = 28560798. Its totient is φ = 28560796.

The previous prime is 28560773. The next prime is 28560811. The reversal of 28560797 is 79706582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28026436 + 534361 = 5294^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 28560797 - 2⁸ = 28560541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28562797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14280398 + 14280399.

It is an arithmetic number, because the mean of its divisors is an integer number (14280399).

Almost surely, 2^28560797 is an apocalyptic number.

It is an amenable number.

28560797 is a deficient number, since it is larger than the sum of its proper divisors (1).

28560797 is an equidigital number, since it uses as much as digits as its factorization.

28560797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 28560797 is about 5344.2302532732. The cubic root of 28560797 is about 305.6727852009.

The spelling of 28560797 in words is "twenty-eight million, five hundred sixty thousand, seven hundred ninety-seven".