28911041 has 2 divisors, whose sum is σ = 28911042. Its totient is φ = 28911040.

The previous prime is 28911037. The next prime is 28911059. The reversal of 28911041 is 14011982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 10240000 = 4321^2 + 3200^2 .

It is a cyclic number.

It is not a de Polignac number, because 28911041 - 2² = 28911037 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28911041.

It is not a weakly prime, because it can be changed into another prime (28911031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14455520 + 14455521.

It is an arithmetic number, because the mean of its divisors is an integer number (14455521).

Almost surely, 2^28911041 is an apocalyptic number.

It is an amenable number.

28911041 is a deficient number, since it is larger than the sum of its proper divisors (1).

28911041 is an equidigital number, since it uses as much as digits as its factorization.

28911041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 28911041 is about 5376.8988273911. The cubic root of 28911041 is about 306.9172111040.

The spelling of 28911041 in words is "twenty-eight million, nine hundred eleven thousand, forty-one".