28166793 has 8 divisors (see below), whose sum is σ = 37604448. Its totient is φ = 18753504.

The previous prime is 28166791. The next prime is 28166813. The reversal of 28166793 is 39766182.

It is a happy number.

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

It is not a de Polignac number, because 28166793 - 2¹ = 28166791 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28166791) 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, 3196 + ... + 8157.

It is an arithmetic number, because the mean of its divisors is an integer number (4700556).

Almost surely, 2^28166793 is an apocalyptic number.

It is an amenable number.

28166793 is a deficient number, since it is larger than the sum of its proper divisors (9437655).

28166793 is a wasteful number, since it uses less digits than its factorization.

28166793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12183.

The product of its digits is 108864, while the sum is 42.

The square root of 28166793 is about 5307.2396780247. The cubic root of 28166793 is about 304.2606583941.

The spelling of 28166793 in words is "twenty-eight million, one hundred sixty-six thousand, seven hundred ninety-three".