28232205 has 8 divisors (see below), whose sum is σ = 45171552. Its totient is φ = 15057168.

The previous prime is 28232179. The next prime is 28232207. The reversal of 28232205 is 50223282.

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

It is not a de Polignac number, because 28232205 - 2⁵ = 28232173 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28232207) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 941059 + ... + 941088.

It is an arithmetic number, because the mean of its divisors is an integer number (5646444).

Almost surely, 2^28232205 is an apocalyptic number.

It is an amenable number.

28232205 is a deficient number, since it is larger than the sum of its proper divisors (16939347).

28232205 is a wasteful number, since it uses less digits than its factorization.

28232205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882155.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 28232205 is about 5313.3986298790. The cubic root of 28232205 is about 304.4960054049.

Adding to 28232205 its reverse (50223282), we get a palindrome (78455487).

The spelling of 28232205 in words is "twenty-eight million, two hundred thirty-two thousand, two hundred five".