28289041 has 4 divisors (see below), whose sum is σ = 30860784. Its totient is φ = 25717300.

The previous prime is 28289039. The next prime is 28289047. The reversal of 28289041 is 14098282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28289041 - 2¹ = 28289039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28288988 and 28289006.

It is not an unprimeable number, because it can be changed into a prime (28289047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285855 + ... + 1285876.

It is an arithmetic number, because the mean of its divisors is an integer number (7715196).

Almost surely, 2^28289041 is an apocalyptic number.

It is an amenable number.

28289041 is a deficient number, since it is larger than the sum of its proper divisors (2571743).

28289041 is a wasteful number, since it uses less digits than its factorization.

28289041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571742.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 28289041 is about 5318.7443066950. The cubic root of 28289041 is about 304.7002016936.

The spelling of 28289041 in words is "twenty-eight million, two hundred eighty-nine thousand, forty-one".