28004873 has 8 divisors (see below), whose sum is σ = 31132416. Its totient is φ = 25016400.

The previous prime is 28004857. The next prime is 28004887. The reversal of 28004873 is 37840082.

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 28004873 - 2⁴ = 28004857 is a prime.

It is a super-2 number, since 2×28004873² = 1568545823492258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28004813) 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 in 7 ways as a sum of consecutive naturals, for example, 34343 + ... + 35148.

It is an arithmetic number, because the mean of its divisors is an integer number (3891552).

Almost surely, 2^28004873 is an apocalyptic number.

It is an amenable number.

28004873 is a deficient number, since it is larger than the sum of its proper divisors (3127543).

28004873 is a wasteful number, since it uses less digits than its factorization.

28004873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69535.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28004873 is about 5291.9630573163. The cubic root of 28004873 is about 303.6765119968.

The spelling of 28004873 in words is "twenty-eight million, four thousand, eight hundred seventy-three".