28174973 has 2 divisors, whose sum is σ = 28174974. Its totient is φ = 28174972.

The previous prime is 28174943. The next prime is 28174987. The reversal of 28174973 is 37947182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26604964 + 1570009 = 5158^2 + 1253^2 .

It is a cyclic number.

It is not a de Polignac number, because 28174973 - 2¹⁰ = 28173949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28174973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28174903) 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, 14087486 + 14087487.

It is an arithmetic number, because the mean of its divisors is an integer number (14087487).

Almost surely, 2^28174973 is an apocalyptic number.

It is an amenable number.

28174973 is a deficient number, since it is larger than the sum of its proper divisors (1).

28174973 is an equidigital number, since it uses as much as digits as its factorization.

28174973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 28174973 is about 5308.0102675108. The cubic root of 28174973 is about 304.2901092833.

The spelling of 28174973 in words is "twenty-eight million, one hundred seventy-four thousand, nine hundred seventy-three".