28435575 has 24 divisors (see below), whose sum is σ = 53730688. Its totient is φ = 12998880.

The previous prime is 28435549. The next prime is 28435579. The reversal of 28435575 is 57553482.

It is not a de Polignac number, because 28435575 - 2⁷ = 28435447 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28435579) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26557 + ... + 27606.

Almost surely, 2^28435575 is an apocalyptic number.

28435575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28435575 is a deficient number, since it is larger than the sum of its proper divisors (25295113).

28435575 is a wasteful number, since it uses less digits than its factorization.

28435575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54183 (or 54178 counting only the distinct ones).

The product of its digits is 168000, while the sum is 39.

The square root of 28435575 is about 5332.5017580869. The cubic root of 28435575 is about 305.2253999886.

The spelling of 28435575 in words is "twenty-eight million, four hundred thirty-five thousand, five hundred seventy-five".