28826785 has 8 divisors (see below), whose sum is σ = 37253160. Its totient is φ = 21287424.

The previous prime is 28826779. The next prime is 28826801. The reversal of 28826785 is 58762882.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54289 + 28772496 = 233^2 + 5364^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28826785 - 2⁷ = 28826657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221680 + ... + 221809.

It is an arithmetic number, because the mean of its divisors is an integer number (4656645).

Almost surely, 2^28826785 is an apocalyptic number.

It is an amenable number.

28826785 is a deficient number, since it is larger than the sum of its proper divisors (8426375).

28826785 is a wasteful number, since it uses less digits than its factorization.

28826785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443507.

The product of its digits is 430080, while the sum is 46.

The square root of 28826785 is about 5369.0581110657. The cubic root of 28826785 is about 306.6187694308.

The spelling of 28826785 in words is "twenty-eight million, eight hundred twenty-six thousand, seven hundred eighty-five".