28344635 has 8 divisors (see below), whose sum is σ = 37105776. Its totient is φ = 20614240.

The previous prime is 28344587. The next prime is 28344649. The reversal of 28344635 is 53644382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28344635 - 2¹⁸ = 28082491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28344595 and 28344604.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 257624 + ... + 257733.

It is an arithmetic number, because the mean of its divisors is an integer number (4638222).

Almost surely, 2^28344635 is an apocalyptic number.

28344635 is a deficient number, since it is larger than the sum of its proper divisors (8761141).

28344635 is a wasteful number, since it uses less digits than its factorization.

28344635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515373.

The product of its digits is 69120, while the sum is 35.

The square root of 28344635 is about 5323.9679751103. The cubic root of 28344635 is about 304.8996713814.

The spelling of 28344635 in words is "twenty-eight million, three hundred forty-four thousand, six hundred thirty-five".