28835845 has 4 divisors (see below), whose sum is σ = 34603020. Its totient is φ = 23068672.

The previous prime is 28835819. The next prime is 28835857. The reversal of 28835845 is 54853882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54853882 = 2 ⋅27426941.

It can be written as a sum of positive squares in 2 ways, for example, as 12173121 + 16662724 = 3489^2 + 4082^2 .

It is a cyclic number.

It is not a de Polignac number, because 28835845 - 2⁷ = 28835717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2883580 + ... + 2883589.

It is an arithmetic number, because the mean of its divisors is an integer number (8650755).

Almost surely, 2^28835845 is an apocalyptic number.

It is an amenable number.

28835845 is a deficient number, since it is larger than the sum of its proper divisors (5767175).

28835845 is an equidigital number, since it uses as much as digits as its factorization.

28835845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767174.

The product of its digits is 307200, while the sum is 43.

The square root of 28835845 is about 5369.9017681891. The cubic root of 28835845 is about 306.6508885760.

The spelling of 28835845 in words is "twenty-eight million, eight hundred thirty-five thousand, eight hundred forty-five".