28600591 has 2 divisors, whose sum is σ = 28600592. Its totient is φ = 28600590.

The previous prime is 28600571. The next prime is 28600669. The reversal of 28600591 is 19500682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28600591 - 2⁷ = 28600463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28600541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300295 + 14300296.

It is an arithmetic number, because the mean of its divisors is an integer number (14300296).

Almost surely, 2^28600591 is an apocalyptic number.

28600591 is a deficient number, since it is larger than the sum of its proper divisors (1).

28600591 is an equidigital number, since it uses as much as digits as its factorization.

28600591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 28600591 is about 5347.9520379300. The cubic root of 28600591 is about 305.8146848102.

Subtracting from 28600591 its reverse (19500682), we obtain a palindrome (9099909).

The spelling of 28600591 in words is "twenty-eight million, six hundred thousand, five hundred ninety-one".