28845485 has 8 divisors (see below), whose sum is σ = 34664856. Its totient is φ = 23042880.

The previous prime is 28845463. The next prime is 28845491. The reversal of 28845485 is 58454882.

It can be written as a sum of positive squares in 4 ways, for example, as 9229444 + 19616041 = 3038^2 + 4429^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-28845485 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26 + ... + 7595.

It is an arithmetic number, because the mean of its divisors is an integer number (4333107).

Almost surely, 2^28845485 is an apocalyptic number.

It is an amenable number.

28845485 is a deficient number, since it is larger than the sum of its proper divisors (5819371).

28845485 is an equidigital number, since it uses as much as digits as its factorization.

28845485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8383.

The product of its digits is 409600, while the sum is 44.

The square root of 28845485 is about 5370.7992887465. The cubic root of 28845485 is about 306.6850565269.

The spelling of 28845485 in words is "twenty-eight million, eight hundred forty-five thousand, four hundred eighty-five".