28475065 has 4 divisors (see below), whose sum is σ = 34170084. Its totient is φ = 22780048.

The previous prime is 28475063. The next prime is 28475087. The reversal of 28475065 is 56057482.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18558864 + 9916201 = 4308^2 + 3149^2 .

It is a cyclic number.

It is not a de Polignac number, because 28475065 - 2¹ = 28475063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28475063) 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, 2847502 + ... + 2847511.

It is an arithmetic number, because the mean of its divisors is an integer number (8542521).

Almost surely, 2^28475065 is an apocalyptic number.

It is an amenable number.

28475065 is a deficient number, since it is larger than the sum of its proper divisors (5695019).

28475065 is an equidigital number, since it uses as much as digits as its factorization.

28475065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695018.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 28475065 is about 5336.2032382585. The cubic root of 28475065 is about 305.3666288969.

The spelling of 28475065 in words is "twenty-eight million, four hundred seventy-five thousand, sixty-five".