28532583 has 6 divisors (see below), whose sum is σ = 41213744. Its totient is φ = 19021716.

The previous prime is 28532551. The next prime is 28532611. The reversal of 28532583 is 38523582.

28532583 is a `hidden beast` number, since 28 + 53 + 2 + 583 = 666.

It is not a de Polignac number, because 28532583 - 2⁵ = 28532551 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 (28532533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1585135 + ... + 1585152.

Almost surely, 2^28532583 is an apocalyptic number.

28532583 is a deficient number, since it is larger than the sum of its proper divisors (12681161).

28532583 is a wasteful number, since it uses less digits than its factorization.

28532583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170293 (or 3170290 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 28532583 is about 5341.5899318461. The cubic root of 28532583 is about 305.5720983122.

Subtracting 28532583 from its reverse (38523582), we obtain a palindrome (9990999).

The spelling of 28532583 in words is "twenty-eight million, five hundred thirty-two thousand, five hundred eighty-three".