28331041 has 4 divisors (see below), whose sum is σ = 29022084. Its totient is φ = 27640000.

The previous prime is 28331029. The next prime is 28331047. The reversal of 28331041 is 14013382.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3530641 + 24800400 = 1879^2 + 4980^2 .

It is a cyclic number.

It is not a de Polignac number, because 28331041 - 2⁹ = 28330529 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28331047) 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, 345460 + ... + 345541.

It is an arithmetic number, because the mean of its divisors is an integer number (7255521).

Almost surely, 2^28331041 is an apocalyptic number.

It is an amenable number.

28331041 is a deficient number, since it is larger than the sum of its proper divisors (691043).

28331041 is an equidigital number, since it uses as much as digits as its factorization.

28331041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691042.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 28331041 is about 5322.6911426458. The cubic root of 28331041 is about 304.8509206047.

The spelling of 28331041 in words is "twenty-eight million, three hundred thirty-one thousand, forty-one".