28284847 has 2 divisors, whose sum is σ = 28284848. Its totient is φ = 28284846.

The previous prime is 28284833. The next prime is 28284853. The reversal of 28284847 is 74848282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28284847 - 2¹⁹ = 27760559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28284857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14142423 + 14142424.

It is an arithmetic number, because the mean of its divisors is an integer number (14142424).

Almost surely, 2^28284847 is an apocalyptic number.

28284847 is a deficient number, since it is larger than the sum of its proper divisors (1).

28284847 is an equidigital number, since it uses as much as digits as its factorization.

28284847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 229376, while the sum is 43.

The square root of 28284847 is about 5318.3500260889. The cubic root of 28284847 is about 304.6851431437.

The spelling of 28284847 in words is "twenty-eight million, two hundred eighty-four thousand, eight hundred forty-seven".