28214205 has 8 divisors (see below), whose sum is σ = 45142752. Its totient is φ = 15047568.

The previous prime is 28214201. The next prime is 28214233. The reversal of 28214205 is 50241282.

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

It is not a de Polignac number, because 28214205 - 2² = 28214201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28214201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940459 + ... + 940488.

It is an arithmetic number, because the mean of its divisors is an integer number (5642844).

Almost surely, 2^28214205 is an apocalyptic number.

It is an amenable number.

28214205 is a deficient number, since it is larger than the sum of its proper divisors (16928547).

28214205 is a wasteful number, since it uses less digits than its factorization.

28214205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880955.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 28214205 is about 5311.7045286800. The cubic root of 28214205 is about 304.4312791660.

Adding to 28214205 its reverse (50241282), we get a palindrome (78455487).

The spelling of 28214205 in words is "twenty-eight million, two hundred fourteen thousand, two hundred five".