28802805 has 8 divisors (see below), whose sum is σ = 46084512. Its totient is φ = 15361488.

The previous prime is 28802801. The next prime is 28802833. The reversal of 28802805 is 50820882.

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

It is not a de Polignac number, because 28802805 - 2² = 28802801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28802801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960079 + ... + 960108.

It is an arithmetic number, because the mean of its divisors is an integer number (5760564).

Almost surely, 2^28802805 is an apocalyptic number.

It is an amenable number.

28802805 is a deficient number, since it is larger than the sum of its proper divisors (17281707).

28802805 is a wasteful number, since it uses less digits than its factorization.

28802805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920195.

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 28802805 is about 5366.8244800813. The cubic root of 28802805 is about 306.5337240138.

The spelling of 28802805 in words is "twenty-eight million, eight hundred two thousand, eight hundred five".