28471943 has 2 divisors, whose sum is σ = 28471944. Its totient is φ = 28471942.

The previous prime is 28471913. The next prime is 28471967. The reversal of 28471943 is 34917482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28471943 - 2⁸ = 28471687 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28471897 and 28471906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28471903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14235971 + 14235972.

It is an arithmetic number, because the mean of its divisors is an integer number (14235972).

Almost surely, 2^28471943 is an apocalyptic number.

28471943 is a deficient number, since it is larger than the sum of its proper divisors (1).

28471943 is an equidigital number, since it uses as much as digits as its factorization.

28471943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 28471943 is about 5335.9107001523. The cubic root of 28471943 is about 305.3554683785.

It can be divided in two parts, 284 and 71943, that added together give a palindrome (72227).

The spelling of 28471943 in words is "twenty-eight million, four hundred seventy-one thousand, nine hundred forty-three".