28859471 has 2 divisors, whose sum is σ = 28859472. Its totient is φ = 28859470.

The previous prime is 28859459. The next prime is 28859477. The reversal of 28859471 is 17495882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28859471 is a prime.

It is a super-3 number, since 3×28859471³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28859477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14429735 + 14429736.

It is an arithmetic number, because the mean of its divisors is an integer number (14429736).

Almost surely, 2^28859471 is an apocalyptic number.

28859471 is a deficient number, since it is larger than the sum of its proper divisors (1).

28859471 is an equidigital number, since it uses as much as digits as its factorization.

28859471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The square root of 28859471 is about 5372.1011717949. The cubic root of 28859471 is about 306.7346148795.

The spelling of 28859471 in words is "twenty-eight million, eight hundred fifty-nine thousand, four hundred seventy-one".