28075583 has 4 divisors (see below), whose sum is σ = 28365120. Its totient is φ = 27786048.

The previous prime is 28075577. The next prime is 28075589. The reversal of 28075583 is 38557082.

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

It is an interprime number because it is at equal distance from previous prime (28075577) and next prime (28075589).

It is a cyclic number.

It is not a de Polignac number, because 28075583 - 2⁶ = 28075519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28075589) 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, 144623 + ... + 144816.

It is an arithmetic number, because the mean of its divisors is an integer number (7091280).

Almost surely, 2^28075583 is an apocalyptic number.

28075583 is a deficient number, since it is larger than the sum of its proper divisors (289537).

28075583 is an equidigital number, since it uses as much as digits as its factorization.

28075583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289536.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 28075583 is about 5298.6397311008. The cubic root of 28075583 is about 303.9318832552.

The spelling of 28075583 in words is "twenty-eight million, seventy-five thousand, five hundred eighty-three".