28493575 has 12 divisors (see below), whose sum is σ = 38544408. Its totient is φ = 20722400.

The previous prime is 28493561. The next prime is 28493627. The reversal of 28493575 is 57539482.

It is not a de Polignac number, because 28493575 - 2⁷ = 28493447 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 11 ways as a sum of consecutive naturals, for example, 51532 + ... + 52081.

It is an arithmetic number, because the mean of its divisors is an integer number (3212034).

Almost surely, 2^28493575 is an apocalyptic number.

28493575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28493575 is a deficient number, since it is larger than the sum of its proper divisors (10050833).

28493575 is a wasteful number, since it uses less digits than its factorization.

28493575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103634 (or 103629 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The square root of 28493575 is about 5337.9373357131. The cubic root of 28493575 is about 305.4327816518.

The spelling of 28493575 in words is "twenty-eight million, four hundred ninety-three thousand, five hundred seventy-five".