28282147 has 2 divisors, whose sum is σ = 28282148. Its totient is φ = 28282146.

The previous prime is 28282139. The next prime is 28282151. The reversal of 28282147 is 74128282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28282147 - 2³ = 28282139 is a prime.

It is not a weakly prime, because it can be changed into another prime (28282547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14141073 + 14141074.

It is an arithmetic number, because the mean of its divisors is an integer number (14141074).

Almost surely, 2^28282147 is an apocalyptic number.

28282147 is a deficient number, since it is larger than the sum of its proper divisors (1).

28282147 is an equidigital number, since it uses as much as digits as its factorization.

28282147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 34.

The square root of 28282147 is about 5318.0961819057. The cubic root of 28282147 is about 304.6754480107.

The spelling of 28282147 in words is "twenty-eight million, two hundred eighty-two thousand, one hundred forty-seven".