28860647 has 2 divisors, whose sum is σ = 28860648. Its totient is φ = 28860646.

The previous prime is 28860619. The next prime is 28860661. The reversal of 28860647 is 74606882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28860647 - 2⁶ = 28860583 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28860347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14430323 + 14430324.

It is an arithmetic number, because the mean of its divisors is an integer number (14430324).

Almost surely, 2^28860647 is an apocalyptic number.

28860647 is a deficient number, since it is larger than the sum of its proper divisors (1).

28860647 is an equidigital number, since it uses as much as digits as its factorization.

28860647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 28860647 is about 5372.2106250593. The cubic root of 28860647 is about 306.7387812184.

The spelling of 28860647 in words is "twenty-eight million, eight hundred sixty thousand, six hundred forty-seven".