28533105 has 24 divisors (see below), whose sum is σ = 50797032. Its totient is φ = 14805504.

The previous prime is 28533103. The next prime is 28533121. The reversal of 28533105 is 50133582.

28533105 is a `hidden beast` number, since 28 + 533 + 105 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1065024 + 27468081 = 1032^2 + 5241^2 .

It is not a de Polignac number, because 28533105 - 2¹ = 28533103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28533103) 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 23 ways as a sum of consecutive naturals, for example, 6904 + ... + 10233.

It is an arithmetic number, because the mean of its divisors is an integer number (2116543).

Almost surely, 2^28533105 is an apocalyptic number.

It is an amenable number.

28533105 is a deficient number, since it is larger than the sum of its proper divisors (22263927).

28533105 is a wasteful number, since it uses less digits than its factorization.

28533105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17185 (or 17182 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 28533105 is about 5341.6387934790. The cubic root of 28533105 is about 305.5739617685.

Adding to 28533105 its reverse (50133582), we get a palindrome (78666687).

The spelling of 28533105 in words is "twenty-eight million, five hundred thirty-three thousand, one hundred five".