28395017 has 4 divisors (see below), whose sum is σ = 32451456. Its totient is φ = 24338580.

The previous prime is 28394999. The next prime is 28395023. The reversal of 28395017 is 71059382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71059382 = 2 ⋅35529691.

It is not a de Polignac number, because 28395017 - 2⁸ = 28394761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28395067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2028209 + ... + 2028222.

It is an arithmetic number, because the mean of its divisors is an integer number (8112864).

Almost surely, 2^28395017 is an apocalyptic number.

It is an amenable number.

28395017 is a deficient number, since it is larger than the sum of its proper divisors (4056439).

28395017 is an equidigital number, since it uses as much as digits as its factorization.

28395017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056438.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28395017 is about 5328.6974956362. The cubic root of 28395017 is about 305.0802153970.

The spelling of 28395017 in words is "twenty-eight million, three hundred ninety-five thousand, seventeen".