28352791 has 2 divisors, whose sum is σ = 28352792. Its totient is φ = 28352790.

The previous prime is 28352773. The next prime is 28352801. The reversal of 28352791 is 19725382.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28352791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28352791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28352711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14176395 + 14176396.

It is an arithmetic number, because the mean of its divisors is an integer number (14176396).

Almost surely, 2^28352791 is an apocalyptic number.

28352791 is a deficient number, since it is larger than the sum of its proper divisors (1).

28352791 is an equidigital number, since it uses as much as digits as its factorization.

28352791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 28352791 is about 5324.7338900644. The cubic root of 28352791 is about 304.9289129321.

The spelling of 28352791 in words is "twenty-eight million, three hundred fifty-two thousand, seven hundred ninety-one".