28065395 has 4 divisors (see below), whose sum is σ = 33678480. Its totient is φ = 22452312.

The previous prime is 28065391. The next prime is 28065403. The reversal of 28065395 is 59356082.

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 28065395 - 2² = 28065391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28065391) 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, 2806535 + ... + 2806544.

It is an arithmetic number, because the mean of its divisors is an integer number (8419620).

Almost surely, 2^28065395 is an apocalyptic number.

28065395 is a deficient number, since it is larger than the sum of its proper divisors (5613085).

28065395 is an equidigital number, since it uses as much as digits as its factorization.

28065395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5613084.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 28065395 is about 5297.6782650516. The cubic root of 28065395 is about 303.8951154506.

The spelling of 28065395 in words is "twenty-eight million, sixty-five thousand, three hundred ninety-five".