28302241 has 8 divisors (see below), whose sum is σ = 31399200. Its totient is φ = 25292640.

The previous prime is 28302223. The next prime is 28302247. The reversal of 28302241 is 14220382.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28302241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28302247) 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, 21156 + ... + 22453.

It is an arithmetic number, because the mean of its divisors is an integer number (3924900).

Almost surely, 2^28302241 is an apocalyptic number.

It is an amenable number.

28302241 is a deficient number, since it is larger than the sum of its proper divisors (3096959).

28302241 is a wasteful number, since it uses less digits than its factorization.

28302241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43679.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28302241 is about 5319.9850563700. The cubic root of 28302241 is about 304.7475865595.

The spelling of 28302241 in words is "twenty-eight million, three hundred two thousand, two hundred forty-one".