28043793 has 16 divisors (see below), whose sum is σ = 42134400. Its totient is φ = 18431280.

The previous prime is 28043789. The next prime is 28043801. The reversal of 28043793 is 39734082.

28043793 is a `hidden beast` number, since 280 + 4 + 379 + 3 = 666.

It is not a de Polignac number, because 28043793 - 2² = 28043789 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28043993) 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 15 ways as a sum of consecutive naturals, for example, 5398 + ... + 9231.

It is an arithmetic number, because the mean of its divisors is an integer number (2633400).

Almost surely, 2^28043793 is an apocalyptic number.

It is an amenable number.

28043793 is a deficient number, since it is larger than the sum of its proper divisors (14090607).

28043793 is a wasteful number, since it uses less digits than its factorization.

28043793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14709 (or 14703 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 28043793 is about 5295.6390549206. The cubic root of 28043793 is about 303.8171258445.

The spelling of 28043793 in words is "twenty-eight million, forty-three thousand, seven hundred ninety-three".