28862591 has 2 divisors, whose sum is σ = 28862592. Its totient is φ = 28862590.

The previous prime is 28862579. The next prime is 28862597. The reversal of 28862591 is 19526882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28862591 - 2⁶ = 28862527 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28862597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14431295 + 14431296.

It is an arithmetic number, because the mean of its divisors is an integer number (14431296).

Almost surely, 2^28862591 is an apocalyptic number.

28862591 is a deficient number, since it is larger than the sum of its proper divisors (1).

28862591 is an equidigital number, since it uses as much as digits as its factorization.

28862591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 41.

The square root of 28862591 is about 5372.3915531167. The cubic root of 28862591 is about 306.7456681835.

The spelling of 28862591 in words is "twenty-eight million, eight hundred sixty-two thousand, five hundred ninety-one".