28759589 has 2 divisors, whose sum is σ = 28759590. Its totient is φ = 28759588.

The previous prime is 28759553. The next prime is 28759603. The reversal of 28759589 is 98595782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27646564 + 1113025 = 5258^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 28759589 - 2¹⁶ = 28694053 is a prime.

It is a super-2 number, since 2×28759589² = 1654227918897842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28759589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28759519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14379794 + 14379795.

It is an arithmetic number, because the mean of its divisors is an integer number (14379795).

Almost surely, 2^28759589 is an apocalyptic number.

It is an amenable number.

28759589 is a deficient number, since it is larger than the sum of its proper divisors (1).

28759589 is an equidigital number, since it uses as much as digits as its factorization.

28759589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 53.

The square root of 28759589 is about 5362.7967516959. The cubic root of 28759589 is about 306.3803385787.

The spelling of 28759589 in words is "twenty-eight million, seven hundred fifty-nine thousand, five hundred eighty-nine".