28476473 has 2 divisors, whose sum is σ = 28476474. Its totient is φ = 28476472.

The previous prime is 28476439. The next prime is 28476491. The reversal of 28476473 is 37467482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14845609 + 13630864 = 3853^2 + 3692^2 .

It is a cyclic number.

It is not a de Polignac number, because 28476473 - 2¹² = 28472377 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 28476473.

It is not a weakly prime, because it can be changed into another prime (28476403) 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, 14238236 + 14238237.

It is an arithmetic number, because the mean of its divisors is an integer number (14238237).

Almost surely, 2^28476473 is an apocalyptic number.

It is an amenable number.

28476473 is a deficient number, since it is larger than the sum of its proper divisors (1).

28476473 is an equidigital number, since it uses as much as digits as its factorization.

28476473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 41.

The square root of 28476473 is about 5336.3351656357. The cubic root of 28476473 is about 305.3716619451.

The spelling of 28476473 in words is "twenty-eight million, four hundred seventy-six thousand, four hundred seventy-three".