28810895 has 4 divisors (see below), whose sum is σ = 34573080. Its totient is φ = 23048712.

The previous prime is 28810889. The next prime is 28810907. The reversal of 28810895 is 59801882.

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 28810895 - 2⁴ = 28810879 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2881085 + ... + 2881094.

It is an arithmetic number, because the mean of its divisors is an integer number (8643270).

Almost surely, 2^28810895 is an apocalyptic number.

28810895 is a deficient number, since it is larger than the sum of its proper divisors (5762185).

28810895 is an equidigital number, since it uses as much as digits as its factorization.

28810895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762184.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 28810895 is about 5367.5781317089. The cubic root of 28810895 is about 306.5624205902.

The spelling of 28810895 in words is "twenty-eight million, eight hundred ten thousand, eight hundred ninety-five".