28845775 has 24 divisors (see below), whose sum is σ = 41140224. Its totient is φ = 19653600.

The previous prime is 28845769. The next prime is 28845793. The reversal of 28845775 is 57754882.

It is not a de Polignac number, because 28845775 - 2¹³ = 28837583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32994 + ... + 33856.

It is an arithmetic number, because the mean of its divisors is an integer number (1714176).

Almost surely, 2^28845775 is an apocalyptic number.

28845775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28845775 is a deficient number, since it is larger than the sum of its proper divisors (12294449).

28845775 is a wasteful number, since it uses less digits than its factorization.

28845775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1066 counting only the distinct ones).

The product of its digits is 627200, while the sum is 46.

The square root of 28845775 is about 5370.8262865224. The cubic root of 28845775 is about 306.6860842830.

The spelling of 28845775 in words is "twenty-eight million, eight hundred forty-five thousand, seven hundred seventy-five".