28280895 has 8 divisors (see below), whose sum is σ = 45249456. Its totient is φ = 15083136.

The previous prime is 28280893. The next prime is 28280921. The reversal of 28280895 is 59808282.

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

It is not a de Polignac number, because 28280895 - 2¹ = 28280893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28280893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 942682 + ... + 942711.

It is an arithmetic number, because the mean of its divisors is an integer number (5656182).

Almost surely, 2^28280895 is an apocalyptic number.

28280895 is a deficient number, since it is larger than the sum of its proper divisors (16968561).

28280895 is a wasteful number, since it uses less digits than its factorization.

28280895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885401.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 28280895 is about 5317.9784693058. The cubic root of 28280895 is about 304.6709521322.

The spelling of 28280895 in words is "twenty-eight million, two hundred eighty thousand, eight hundred ninety-five".