20789173 has 8 divisors (see below), whose sum is σ = 22417920. Its totient is φ = 19213920.

The previous prime is 20789141. The next prime is 20789179. The reversal of 20789173 is 37198702.

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

It is a cyclic number.

It is not a de Polignac number, because 20789173 - 2⁵ = 20789141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20789179) 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, 12565 + ... + 14122.

It is an arithmetic number, because the mean of its divisors is an integer number (2802240).

Almost surely, 2^20789173 is an apocalyptic number.

It is an amenable number.

20789173 is a deficient number, since it is larger than the sum of its proper divisors (1628747).

20789173 is a wasteful number, since it uses less digits than its factorization.

20789173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26747.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 20789173 is about 4559.5145574940. The cubic root of 20789173 is about 274.9660475989.

The spelling of 20789173 in words is "twenty million, seven hundred eighty-nine thousand, one hundred seventy-three".