28232471 has 2 divisors, whose sum is σ = 28232472. Its totient is φ = 28232470.

The previous prime is 28232419. The next prime is 28232473. The reversal of 28232471 is 17423282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28232471 - 2¹⁰ = 28231447 is a prime.

It is a super-3 number, since 3×28232471³ (a number of 23 digits) contains 333 as substring.

Together with 28232473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28232473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14116235 + 14116236.

It is an arithmetic number, because the mean of its divisors is an integer number (14116236).

Almost surely, 2^28232471 is an apocalyptic number.

28232471 is a deficient number, since it is larger than the sum of its proper divisors (1).

28232471 is an equidigital number, since it uses as much as digits as its factorization.

28232471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

The square root of 28232471 is about 5313.4236608801. The cubic root of 28232471 is about 304.4969617085.

The spelling of 28232471 in words is "twenty-eight million, two hundred thirty-two thousand, four hundred seventy-one".