28064735 has 4 divisors (see below), whose sum is σ = 33677688. Its totient is φ = 22451784.

The previous prime is 28064717. The next prime is 28064737. The reversal of 28064735 is 53746082.

It is a happy number.

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 28064735 - 2⁸ = 28064479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28064695 and 28064704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064737) 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 3 ways as a sum of consecutive naturals, for example, 2806469 + ... + 2806478.

It is an arithmetic number, because the mean of its divisors is an integer number (8419422).

Almost surely, 2^28064735 is an apocalyptic number.

28064735 is a deficient number, since it is larger than the sum of its proper divisors (5612953).

28064735 is an equidigital number, since it uses as much as digits as its factorization.

28064735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5612952.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 28064735 is about 5297.6159732468. The cubic root of 28064735 is about 303.8927332483.

The spelling of 28064735 in words is "twenty-eight million, sixty-four thousand, seven hundred thirty-five".