28817473 has 2 divisors, whose sum is σ = 28817474. Its totient is φ = 28817472.

The previous prime is 28817441. The next prime is 28817479. The reversal of 28817473 is 37471882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15186609 + 13630864 = 3897^2 + 3692^2 .

It is a cyclic number.

It is not a de Polignac number, because 28817473 - 2⁵ = 28817441 is a prime.

It is not a weakly prime, because it can be changed into another prime (28817479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14408736 + 14408737.

It is an arithmetic number, because the mean of its divisors is an integer number (14408737).

Almost surely, 2^28817473 is an apocalyptic number.

It is an amenable number.

28817473 is a deficient number, since it is larger than the sum of its proper divisors (1).

28817473 is an equidigital number, since it uses as much as digits as its factorization.

28817473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 40.

The square root of 28817473 is about 5368.1908498115. The cubic root of 28817473 is about 306.5857498915.

The spelling of 28817473 in words is "twenty-eight million, eight hundred seventeen thousand, four hundred seventy-three".