28267697 has 2 divisors, whose sum is σ = 28267698. Its totient is φ = 28267696.

The previous prime is 28267669. The next prime is 28267711. The reversal of 28267697 is 79676282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25441936 + 2825761 = 5044^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 28267697 - 2¹² = 28263601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28267607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14133848 + 14133849.

It is an arithmetic number, because the mean of its divisors is an integer number (14133849).

Almost surely, 2^28267697 is an apocalyptic number.

It is an amenable number.

28267697 is a deficient number, since it is larger than the sum of its proper divisors (1).

28267697 is an equidigital number, since it uses as much as digits as its factorization.

28267697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 28267697 is about 5316.7374394454. The cubic root of 28267697 is about 304.6235506043.

The spelling of 28267697 in words is "twenty-eight million, two hundred sixty-seven thousand, six hundred ninety-seven".