Search a number
-
+
13444 = 223361
BaseRepresentation
bin11010010000100
3200102221
43102010
5412234
6142124
754124
oct32204
920387
1013444
11a112
127944
136172
144c84
153eb4
hex3484

13444 has 6 divisors (see below), whose sum is σ = 23534. Its totient is φ = 6720.

The previous prime is 13441. The next prime is 13451. The reversal of 13444 is 44431.

Adding to 13444 its reverse (44431), we get a palindrome (57875).

It can be written as a sum of positive squares in only one way, i.e., 12544 + 900 = 112^2 + 30^2 .

It is a super-2 number, since 2×134442 = 361482272, which contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (13441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1677 + ... + 1684.

213444 is an apocalyptic number.

It is an amenable number.

13444 is a deficient number, since it is larger than the sum of its proper divisors (10090).

13444 is a wasteful number, since it uses less digits than its factorization.

13444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365 (or 3363 counting only the distinct ones).

The product of its digits is 192, while the sum is 16.

The square root of 13444 is about 115.9482643251. The cubic root of 13444 is about 23.7780462763.

The spelling of 13444 in words is "thirteen thousand, four hundred forty-four".

Divisors: 1 2 4 3361 6722 13444