28312573 has 8 divisors (see below), whose sum is σ = 28771200. Its totient is φ = 27856608.

The previous prime is 28312567. The next prime is 28312577. The reversal of 28312573 is 37521382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28312573 - 2¹⁷ = 28181501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28312577) 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 in 7 ways as a sum of consecutive naturals, for example, 34593 + ... + 35401.

It is an arithmetic number, because the mean of its divisors is an integer number (3596400).

Almost surely, 2^28312573 is an apocalyptic number.

It is an amenable number.

28312573 is a deficient number, since it is larger than the sum of its proper divisors (458627).

28312573 is an equidigital number, since it uses as much as digits as its factorization.

28312573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331.

The product of its digits is 10080, while the sum is 31.

The square root of 28312573 is about 5320.9560231222. The cubic root of 28312573 is about 304.7846657081.

The spelling of 28312573 in words is "twenty-eight million, three hundred twelve thousand, five hundred seventy-three".