28543113 has 12 divisors (see below), whose sum is σ = 41283268. Its totient is φ = 19003680.

The previous prime is 28543091. The next prime is 28543129. The reversal of 28543113 is 31134582.

It is a happy number.

28543113 is a `hidden beast` number, since 2 + 8 + 543 + 113 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12766329 + 15776784 = 3573^2 + 3972^2 .

It is not a de Polignac number, because 28543113 - 2⁶ = 28543049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28543513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7383 + ... + 10563.

Almost surely, 2^28543113 is an apocalyptic number.

It is an amenable number.

28543113 is a deficient number, since it is larger than the sum of its proper divisors (12740155).

28543113 is a wasteful number, since it uses less digits than its factorization.

28543113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184 (or 4181 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 28543113 is about 5342.5755025081. The cubic root of 28543113 is about 305.6096843292.

Adding to 28543113 its reverse (31134582), we get a palindrome (59677695).

The spelling of 28543113 in words is "twenty-eight million, five hundred forty-three thousand, one hundred thirteen".