Base | Representation |
---|---|
bin | 100111001101010 |
3 | 1000112111 |
4 | 10321222 |
5 | 1120244 |
6 | 232534 |
7 | 112345 |
oct | 47152 |
9 | 30474 |
10 | 20074 |
11 | 1409a |
12 | b74a |
13 | 91a2 |
14 | 745c |
15 | 5e34 |
hex | 4e6a |
20074 has 4 divisors (see below), whose sum is σ = 30114. Its totient is φ = 10036.
The previous prime is 20071. The next prime is 20089. The reversal of 20074 is 47002.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 18225 + 1849 = 135^2 + 43^2 .
It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
20074 is a modest number, since divided by 74 gives 20 as remainder.
It is a plaindrome in base 7.
It is not an unprimeable number, because it can be changed into a prime (20071) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5017 + ... + 5020.
220074 is an apocalyptic number.
20074 is a deficient number, since it is larger than the sum of its proper divisors (10040).
20074 is a wasteful number, since it uses less digits than its factorization.
20074 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10039.
The product of its (nonzero) digits is 56, while the sum is 13.
The square root of 20074 is about 141.6827441857. The cubic root of 20074 is about 27.1776127786.
Adding to 20074 its reverse (47002), we get a palindrome (67076).
The spelling of 20074 in words is "twenty thousand, seventy-four", and thus it is an iban number.
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