28274941 has 2 divisors, whose sum is σ = 28274942. Its totient is φ = 28274940.

The previous prime is 28274929. The next prime is 28274989. The reversal of 28274941 is 14947282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19448100 + 8826841 = 4410^2 + 2971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28274941 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 28274941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28274921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14137470 + 14137471.

It is an arithmetic number, because the mean of its divisors is an integer number (14137471).

Almost surely, 2^28274941 is an apocalyptic number.

It is an amenable number.

28274941 is a deficient number, since it is larger than the sum of its proper divisors (1).

28274941 is an equidigital number, since it uses as much as digits as its factorization.

28274941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 28274941 is about 5317.4186406564. The cubic root of 28274941 is about 304.6495697565.

The spelling of 28274941 in words is "twenty-eight million, two hundred seventy-four thousand, nine hundred forty-one".