28900205 has 8 divisors (see below), whose sum is σ = 34732800. Its totient is φ = 23085136.

The previous prime is 28900177. The next prime is 28900217. The reversal of 28900205 is 50200982.

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 28900205 - 2¹⁰ = 28899181 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 425 + ... + 7614.

It is an arithmetic number, because the mean of its divisors is an integer number (4341600).

Almost surely, 2^28900205 is an apocalyptic number.

It is an amenable number.

28900205 is a deficient number, since it is larger than the sum of its proper divisors (5832595).

28900205 is an equidigital number, since it uses as much as digits as its factorization.

28900205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 28900205 is about 5375.8910889266. The cubic root of 28900205 is about 306.8788616203.

The spelling of 28900205 in words is "twenty-eight million, nine hundred thousand, two hundred five".