28205033 has 8 divisors (see below), whose sum is σ = 28932288. Its totient is φ = 27481104.

The previous prime is 28205027. The next prime is 28205039. The reversal of 28205033 is 33050282.

It is an interprime number because it is at equal distance from previous prime (28205027) and next prime (28205039).

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

It is a cyclic number.

It is not a de Polignac number, because 28205033 - 2⁴ = 28205017 is a prime.

It is a super-3 number, since 3×28205033³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28205039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33860 + ... + 34682.

It is an arithmetic number, because the mean of its divisors is an integer number (3616536).

Almost surely, 2^28205033 is an apocalyptic number.

It is an amenable number.

28205033 is a deficient number, since it is larger than the sum of its proper divisors (727255).

28205033 is an equidigital number, since it uses as much as digits as its factorization.

28205033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 28205033 is about 5310.8410821639. The cubic root of 28205033 is about 304.3982869632.

The spelling of 28205033 in words is "twenty-eight million, two hundred five thousand, thirty-three".