28003835 has 8 divisors (see below), whose sum is σ = 33690816. Its totient is φ = 22345600.

The previous prime is 28003831. The next prime is 28003873. The reversal of 28003835 is 53830082.

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

It is not a de Polignac number, because 28003835 - 2² = 28003831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28003798 and 28003807.

It is not an unprimeable number, because it can be changed into a prime (28003831) 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 7 ways as a sum of consecutive naturals, for example, 4979 + ... + 8988.

It is an arithmetic number, because the mean of its divisors is an integer number (4211352).

Almost surely, 2^28003835 is an apocalyptic number.

28003835 is a deficient number, since it is larger than the sum of its proper divisors (5686981).

28003835 is a wasteful number, since it uses less digits than its factorization.

28003835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14373.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28003835 is about 5291.8649831605. The cubic root of 28003835 is about 303.6727600293.

The spelling of 28003835 in words is "twenty-eight million, three thousand, eight hundred thirty-five".