20174943 has 4 divisors (see below), whose sum is σ = 26899928. Its totient is φ = 13449960.

The previous prime is 20174939. The next prime is 20174951. The reversal of 20174943 is 34947102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20174943 - 2² = 20174939 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 20174943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20174543) 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, 3362488 + ... + 3362493.

It is an arithmetic number, because the mean of its divisors is an integer number (6724982).

Almost surely, 2^20174943 is an apocalyptic number.

20174943 is a deficient number, since it is larger than the sum of its proper divisors (6724985).

20174943 is an equidigital number, since it uses as much as digits as its factorization.

20174943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6724984.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 20174943 is about 4491.6525911963. The cubic root of 20174943 is about 272.2309124410.

The spelling of 20174943 in words is "twenty million, one hundred seventy-four thousand, nine hundred forty-three".