28668241 has 8 divisors (see below), whose sum is σ = 32865344. Its totient is φ = 24496560.

The previous prime is 28668221. The next prime is 28668247. The reversal of 28668241 is 14286682.

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 28668241 - 2⁷ = 28668113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28668241.

It is not an unprimeable number, because it can be changed into a prime (28668247) 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, 3870 + ... + 8503.

It is an arithmetic number, because the mean of its divisors is an integer number (4108168).

Almost surely, 2^28668241 is an apocalyptic number.

It is an amenable number.

28668241 is a deficient number, since it is larger than the sum of its proper divisors (4197103).

28668241 is a wasteful number, since it uses less digits than its factorization.

28668241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12711.

The product of its digits is 36864, while the sum is 37.

The square root of 28668241 is about 5354.2731532861. The cubic root of 28668241 is about 306.0556130855.

The spelling of 28668241 in words is "twenty-eight million, six hundred sixty-eight thousand, two hundred forty-one".