28584473 has 2 divisors, whose sum is σ = 28584474. Its totient is φ = 28584472.

The previous prime is 28584443. The next prime is 28584481. The reversal of 28584473 is 37448582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14348944 + 14235529 = 3788^2 + 3773^2 .

It is a cyclic number.

It is not a de Polignac number, because 28584473 - 2¹⁶ = 28518937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28584473.

It is not a weakly prime, because it can be changed into another prime (28584403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14292236 + 14292237.

It is an arithmetic number, because the mean of its divisors is an integer number (14292237).

Almost surely, 2^28584473 is an apocalyptic number.

It is an amenable number.

28584473 is a deficient number, since it is larger than the sum of its proper divisors (1).

28584473 is an equidigital number, since it uses as much as digits as its factorization.

28584473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 41.

The square root of 28584473 is about 5346.4448935718. Note that the first 3 decimals coincide. The cubic root of 28584473 is about 305.7572262385.

The spelling of 28584473 in words is "twenty-eight million, five hundred eighty-four thousand, four hundred seventy-three".