28152589 has 4 divisors (see below), whose sum is σ = 28169856. Its totient is φ = 28135324.

The previous prime is 28152587. The next prime is 28152599. The reversal of 28152589 is 98525182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28152589 - 2¹ = 28152587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152581) 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 in 3 ways as a sum of consecutive naturals, for example, 5899 + ... + 9544.

It is an arithmetic number, because the mean of its divisors is an integer number (7042464).

Almost surely, 2^28152589 is an apocalyptic number.

It is an amenable number.

28152589 is a deficient number, since it is larger than the sum of its proper divisors (17267).

28152589 is a wasteful number, since it uses less digits than its factorization.

28152589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17266.

The product of its digits is 57600, while the sum is 40.

The square root of 28152589 is about 5305.9013371905. The cubic root of 28152589 is about 304.2095054277.

The spelling of 28152589 in words is "twenty-eight million, one hundred fifty-two thousand, five hundred eighty-nine".