28882591 has 2 divisors, whose sum is σ = 28882592. Its totient is φ = 28882590.

The previous prime is 28882583. The next prime is 28882613. The reversal of 28882591 is 19528882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28882591 - 2³ = 28882583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28882501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14441295 + 14441296.

It is an arithmetic number, because the mean of its divisors is an integer number (14441296).

Almost surely, 2^28882591 is an apocalyptic number.

28882591 is a deficient number, since it is larger than the sum of its proper divisors (1).

28882591 is an equidigital number, since it uses as much as digits as its factorization.

28882591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 43.

The square root of 28882591 is about 5374.2525991993. The cubic root of 28882591 is about 306.8165037836.

The spelling of 28882591 in words is "twenty-eight million, eight hundred eighty-two thousand, five hundred ninety-one".