28884697 has 2 divisors, whose sum is σ = 28884698. Its totient is φ = 28884696.

The previous prime is 28884671. The next prime is 28884701. The reversal of 28884697 is 79648882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16289296 + 12595401 = 4036^2 + 3549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28884697 is a prime.

It is not a weakly prime, because it can be changed into another prime (28884197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14442348 + 14442349.

It is an arithmetic number, because the mean of its divisors is an integer number (14442349).

Almost surely, 2^28884697 is an apocalyptic number.

It is an amenable number.

28884697 is a deficient number, since it is larger than the sum of its proper divisors (1).

28884697 is an equidigital number, since it uses as much as digits as its factorization.

28884697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 52.

The square root of 28884697 is about 5374.4485298494. The cubic root of 28884697 is about 306.8239608692.

The spelling of 28884697 in words is "twenty-eight million, eight hundred eighty-four thousand, six hundred ninety-seven".