28817573 has 2 divisors, whose sum is σ = 28817574. Its totient is φ = 28817572.

The previous prime is 28817557. The next prime is 28817603. The reversal of 28817573 is 37571882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19070689 + 9746884 = 4367^2 + 3122^2 .

It is a cyclic number.

It is not a de Polignac number, because 28817573 - 2⁴ = 28817557 is a prime.

It is a super-2 number, since 2×28817573² = 1660905027220658, which contains 22 as substring.

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 28817573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28817273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14408786 + 14408787.

It is an arithmetic number, because the mean of its divisors is an integer number (14408787).

Almost surely, 2^28817573 is an apocalyptic number.

It is an amenable number.

28817573 is a deficient number, since it is larger than the sum of its proper divisors (1).

28817573 is an equidigital number, since it uses as much as digits as its factorization.

28817573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 41.

The square root of 28817573 is about 5368.2001639283. The cubic root of 28817573 is about 306.5861045206.

The spelling of 28817573 in words is "twenty-eight million, eight hundred seventeen thousand, five hundred seventy-three".