28000843 has 8 divisors (see below), whose sum is σ = 31127936. Its totient is φ = 25012800.

The previous prime is 28000837. The next prime is 28000849. The reversal of 28000843 is 34800082.

It is an interprime number because it is at equal distance from previous prime (28000837) and next prime (28000849).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28000843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28000849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34338 + ... + 35143.

It is an arithmetic number, because the mean of its divisors is an integer number (3890992).

Almost surely, 2^28000843 is an apocalyptic number.

28000843 is a deficient number, since it is larger than the sum of its proper divisors (3127093).

28000843 is a wasteful number, since it uses less digits than its factorization.

28000843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69525.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 28000843 is about 5291.5822775423. The cubic root of 28000843 is about 303.6619445909.

The spelling of 28000843 in words is "twenty-eight million, eight hundred forty-three", and thus it is an aban number.