28933841 has 2 divisors, whose sum is σ = 28933842. Its totient is φ = 28933840.

The previous prime is 28933799. The next prime is 28933843. The reversal of 28933841 is 14833982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28569025 + 364816 = 5345^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 28933841 - 2¹⁸ = 28671697 is a prime.

Together with 28933843, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28933795 and 28933804.

It is not a weakly prime, because it can be changed into another prime (28933843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14466920 + 14466921.

It is an arithmetic number, because the mean of its divisors is an integer number (14466921).

Almost surely, 2^28933841 is an apocalyptic number.

It is an amenable number.

28933841 is a deficient number, since it is larger than the sum of its proper divisors (1).

28933841 is an equidigital number, since it uses as much as digits as its factorization.

28933841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 28933841 is about 5379.0185907840. The cubic root of 28933841 is about 306.9978708733.

The spelling of 28933841 in words is "twenty-eight million, nine hundred thirty-three thousand, eight hundred forty-one".