28114865 has 8 divisors (see below), whose sum is σ = 34072488. Its totient is φ = 22268800.

The previous prime is 28114847. The next prime is 28114873. The reversal of 28114865 is 56841182.

It can be written as a sum of positive squares in 4 ways, for example, as 15147664 + 12967201 = 3892^2 + 3601^2 .

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

It is not a de Polignac number, because 28114865 - 2⁸ = 28114609 is a prime.

It is a Duffinian number.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 27332 + ... + 28341.

It is an arithmetic number, because the mean of its divisors is an integer number (4259061).

Almost surely, 2^28114865 is an apocalyptic number.

It is an amenable number.

28114865 is a deficient number, since it is larger than the sum of its proper divisors (5957623).

28114865 is a wasteful number, since it uses less digits than its factorization.

28114865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55779.

The product of its digits is 15360, while the sum is 35.

The square root of 28114865 is about 5302.3452358367. The cubic root of 28114865 is about 304.0735661353.

The spelling of 28114865 in words is "twenty-eight million, one hundred fourteen thousand, eight hundred sixty-five".