20174 has 16 divisors (see below), whose sum is σ = 38016. Its totient is φ = 7800.

The previous prime is 20173. The next prime is 20177. The reversal of 20174 is 47102.

20174 = 81² + 82² + 83².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20173) 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, 89 + ... + 219.

It is an arithmetic number, because the mean of its divisors is an integer number (2376).

2²⁰¹⁷⁴ is an apocalyptic number.

20174 is a deficient number, since it is larger than the sum of its proper divisors (17842).

20174 is a wasteful number, since it uses less digits than its factorization.

20174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 20174 is about 142.0352069031. The cubic root of 20174 is about 27.2226670913. Note that the first 3 decimals are identical.

20174 divided by its sum of digits (14) gives a palindrome (1441).

Adding to 20174 its reverse (47102), we get a palindrome (67276).

The spelling of 20174 in words is "twenty thousand, one hundred seventy-four", and thus it is an iban number.