Search a number
-
+
22006 = 211003
BaseRepresentation
bin101010111110110
31010012001
411113312
51201011
6245514
7121105
oct52766
933161
1022006
1115596
121089a
13a02a
14803c
1567c1
hex55f6

22006 has 4 divisors (see below), whose sum is σ = 33012. Its totient is φ = 11002.

The previous prime is 22003. The next prime is 22013. The reversal of 22006 is 60022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60022 = 230011.

It is a junction number, because it is equal to n+sod(n) for n = 21983 and 22001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (8253).

222006 is an apocalyptic number.

22006 is a deficient number, since it is larger than the sum of its proper divisors (11006).

22006 is a wasteful number, since it uses less digits than its factorization.

22006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 22006 is about 148.3441943589. The cubic root of 22006 is about 28.0229403835.

Adding to 22006 its reverse (60022), we get a palindrome (82028).

The spelling of 22006 in words is "twenty-two thousand, six".

Divisors: 1 2 11003 22006