28510589 has 2 divisors, whose sum is σ = 28510590. Its totient is φ = 28510588.

The previous prime is 28510571. The next prime is 28510597. The reversal of 28510589 is 98501582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28270489 + 240100 = 5317^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 28510589 - 2²⁴ = 11733373 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 (28510289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14255294 + 14255295.

It is an arithmetic number, because the mean of its divisors is an integer number (14255295).

Almost surely, 2^28510589 is an apocalyptic number.

It is an amenable number.

28510589 is a deficient number, since it is larger than the sum of its proper divisors (1).

28510589 is an equidigital number, since it uses as much as digits as its factorization.

28510589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 28510589 is about 5339.5307846289. The cubic root of 28510589 is about 305.4935625981.

The spelling of 28510589 in words is "twenty-eight million, five hundred ten thousand, five hundred eighty-nine".