20173105 has 8 divisors (see below), whose sum is σ = 24723072. Its totient is φ = 15794928.

The previous prime is 20173091. The next prime is 20173133. The reversal of 20173105 is 50137102.

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 20173105 - 2¹³ = 20164913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42687 + ... + 43156.

It is an arithmetic number, because the mean of its divisors is an integer number (3090384).

Almost surely, 2^20173105 is an apocalyptic number.

It is an amenable number.

20173105 is a deficient number, since it is larger than the sum of its proper divisors (4549967).

20173105 is an equidigital number, since it uses as much as digits as its factorization.

20173105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85895.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 20173105 is about 4491.4479847817. The cubic root of 20173105 is about 272.2226451626. Note that the first 3 decimals are identical.

The spelling of 20173105 in words is "twenty million, one hundred seventy-three thousand, one hundred five".