28442735 has 4 divisors (see below), whose sum is σ = 34131288. Its totient is φ = 22754184.

The previous prime is 28442731. The next prime is 28442741. The reversal of 28442735 is 53724482.

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 28442735 - 2² = 28442731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28442695 and 28442704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28442731) 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 3 ways as a sum of consecutive naturals, for example, 2844269 + ... + 2844278.

It is an arithmetic number, because the mean of its divisors is an integer number (8532822).

Almost surely, 2^28442735 is an apocalyptic number.

28442735 is a deficient number, since it is larger than the sum of its proper divisors (5688553).

28442735 is an equidigital number, since it uses as much as digits as its factorization.

28442735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688552.

The product of its digits is 53760, while the sum is 35.

The square root of 28442735 is about 5333.1730705088. The cubic root of 28442735 is about 305.2510161457.

The spelling of 28442735 in words is "twenty-eight million, four hundred forty-two thousand, seven hundred thirty-five".