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19002 = 233167
BaseRepresentation
bin100101000111010
3222001210
410220322
51102002
6223550
7106254
oct45072
928053
1019002
1113305
12abb6
138859
146cd4
15596c
hex4a3a

19002 has 8 divisors (see below), whose sum is σ = 38016. Its totient is φ = 6332.

The previous prime is 19001. The next prime is 19009. The reversal of 19002 is 20091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

19002 is an admirable number.

It is a super-2 number, since 2×190022 = 722152008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578 + ... + 1589.

It is an arithmetic number, because the mean of its divisors is an integer number (4752).

219002 is an apocalyptic number.

19002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19008).

19002 is a wasteful number, since it uses less digits than its factorization.

19002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 19002 is about 137.8477420925. The cubic root of 19002 is about 26.6849527356.

Adding to 19002 its reverse (20091), we get a palindrome (39093).

Subtracting 19002 from its reverse (20091), we obtain a square (1089 = 332).

The spelling of 19002 in words is "nineteen thousand, two".

Divisors: 1 2 3 6 3167 6334 9501 19002