28048591 has 2 divisors, whose sum is σ = 28048592. Its totient is φ = 28048590.

The previous prime is 28048567. The next prime is 28048619. The reversal of 28048591 is 19584082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28048591 - 2¹⁹ = 27524303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28048591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28048511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14024295 + 14024296.

It is an arithmetic number, because the mean of its divisors is an integer number (14024296).

Almost surely, 2^28048591 is an apocalyptic number.

28048591 is a deficient number, since it is larger than the sum of its proper divisors (1).

28048591 is an equidigital number, since it uses as much as digits as its factorization.

28048591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 28048591 is about 5296.0920498043. The cubic root of 28048591 is about 303.8344515019.

The spelling of 28048591 in words is "twenty-eight million, forty-eight thousand, five hundred ninety-one".