28710797 has 2 divisors, whose sum is σ = 28710798. Its totient is φ = 28710796.

The previous prime is 28710793. The next prime is 28710811. The reversal of 28710797 is 79701782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27520516 + 1190281 = 5246^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 28710797 - 2² = 28710793 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28710793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14355398 + 14355399.

It is an arithmetic number, because the mean of its divisors is an integer number (14355399).

Almost surely, 2^28710797 is an apocalyptic number.

It is an amenable number.

28710797 is a deficient number, since it is larger than the sum of its proper divisors (1).

28710797 is an equidigital number, since it uses as much as digits as its factorization.

28710797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 28710797 is about 5358.2457017199. The cubic root of 28710797 is about 306.2069776021.

The spelling of 28710797 in words is "twenty-eight million, seven hundred ten thousand, seven hundred ninety-seven".