28106793 has 24 divisors (see below), whose sum is σ = 47698560. Its totient is φ = 15723360.

The previous prime is 28106789. The next prime is 28106807. The reversal of 28106793 is 39760182.

It is not a de Polignac number, because 28106793 - 2² = 28106789 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28106723) 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 23 ways as a sum of consecutive naturals, for example, 9633 + ... + 12206.

It is an arithmetic number, because the mean of its divisors is an integer number (1987440).

Almost surely, 2^28106793 is an apocalyptic number.

It is an amenable number.

28106793 is a deficient number, since it is larger than the sum of its proper divisors (19591767).

28106793 is a wasteful number, since it uses less digits than its factorization.

28106793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21869 (or 21866 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 28106793 is about 5301.5840085771. The cubic root of 28106793 is about 304.0444627083.

The spelling of 28106793 in words is "twenty-eight million, one hundred six thousand, seven hundred ninety-three".