28259071 has 2 divisors, whose sum is σ = 28259072. Its totient is φ = 28259070.

The previous prime is 28259069. The next prime is 28259081. The reversal of 28259071 is 17095282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28259071 - 2¹ = 28259069 is a prime.

Together with 28259069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28259051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14129535 + 14129536.

It is an arithmetic number, because the mean of its divisors is an integer number (14129536).

Almost surely, 2^28259071 is an apocalyptic number.

28259071 is a deficient number, since it is larger than the sum of its proper divisors (1).

28259071 is an equidigital number, since it uses as much as digits as its factorization.

28259071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 28259071 is about 5315.9261657777. The cubic root of 28259071 is about 304.5925617566.

The spelling of 28259071 in words is "twenty-eight million, two hundred fifty-nine thousand, seventy-one".