28381795 has 16 divisors (see below), whose sum is σ = 36842400. Its totient is φ = 20865024.

The previous prime is 28381757. The next prime is 28381811. The reversal of 28381795 is 59718382.

It is a cyclic number.

It is not a de Polignac number, because 28381795 - 2⁷ = 28381667 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 15856 + ... + 17554.

It is an arithmetic number, because the mean of its divisors is an integer number (2302650).

Almost surely, 2^28381795 is an apocalyptic number.

28381795 is a deficient number, since it is larger than the sum of its proper divisors (8460605).

28381795 is a wasteful number, since it uses less digits than its factorization.

28381795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974.

The product of its digits is 120960, while the sum is 43.

The square root of 28381795 is about 5327.4567102887. The cubic root of 28381795 is about 305.0328550113.

The spelling of 28381795 in words is "twenty-eight million, three hundred eighty-one thousand, seven hundred ninety-five".