28680835 has 4 divisors (see below), whose sum is σ = 34417008. Its totient is φ = 22944664.

The previous prime is 28680829. The next prime is 28680881. The reversal of 28680835 is 53808682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28680835 - 2¹¹ = 28678787 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2868079 + ... + 2868088.

It is an arithmetic number, because the mean of its divisors is an integer number (8604252).

Almost surely, 2^28680835 is an apocalyptic number.

28680835 is a deficient number, since it is larger than the sum of its proper divisors (5736173).

28680835 is an equidigital number, since it uses as much as digits as its factorization.

28680835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5736172.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 28680835 is about 5355.4490941470. The cubic root of 28680835 is about 306.1004234165.

The spelling of 28680835 in words is "twenty-eight million, six hundred eighty thousand, eight hundred thirty-five".