Search a number
-
+
19007 = 83229
BaseRepresentation
bin100101000111111
3222001222
410220333
51102012
6223555
7106262
oct45077
928058
1019007
111330a
12abbb
138861
146cd9
155972
hex4a3f

19007 has 4 divisors (see below), whose sum is σ = 19320. Its totient is φ = 18696.

The previous prime is 19001. The next prime is 19009. The reversal of 19007 is 70091.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-19007 is a prime.

It is a super-2 number, since 2×190072 = 722532098, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 6 and base 12.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19001) 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, 32 + ... + 197.

It is an arithmetic number, because the mean of its divisors is an integer number (4830).

219007 is an apocalyptic number.

19007 is a deficient number, since it is larger than the sum of its proper divisors (313).

19007 is an equidigital number, since it uses as much as digits as its factorization.

19007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 63, while the sum is 17.

The square root of 19007 is about 137.8658768514. The cubic root of 19007 is about 26.6872930693.

Adding to 19007 its reverse (70091), we get a palindrome (89098).

The spelling of 19007 in words is "nineteen thousand, seven".

Divisors: 1 83 229 19007