28804793 has 4 divisors (see below), whose sum is σ = 28819200. Its totient is φ = 28790388.

The previous prime is 28804781. The next prime is 28804799. The reversal of 28804793 is 39740882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39740882 = 2 ⋅19870441.

It is a cyclic number.

It is not a de Polignac number, because 28804793 - 2¹² = 28800697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28804793.

It is not an unprimeable number, because it can be changed into a prime (28804799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3605 + ... + 8402.

It is an arithmetic number, because the mean of its divisors is an integer number (7204800).

Almost surely, 2^28804793 is an apocalyptic number.

It is an amenable number.

28804793 is a deficient number, since it is larger than the sum of its proper divisors (14407).

28804793 is a wasteful number, since it uses less digits than its factorization.

28804793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14406.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 28804793 is about 5367.0096888305. The cubic root of 28804793 is about 306.5407762786.

The spelling of 28804793 in words is "twenty-eight million, eight hundred four thousand, seven hundred ninety-three".