3273
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4368
- Proper Divisor Sum (Aliquot Sum)
- 1095
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2180
- Möbius Function
- 1
- Radical
- 3273
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 136
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- a(n) = floor( n*(n-1)*(n-2)/10 ).at n=33A011892
- Integers that are squarefree and also the sum of first k squarefrees for some k.at n=38A013932
- Molien series of 4-dimensional representation of u.g.g.r. #8.at n=19A013978
- Numbers k such that the continued fraction for sqrt(k) has period 48.at n=22A020387
- a(n) = integer nearest e*a(n-1), where a(0) = 1.at n=8A024581
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 38.at n=16A031536
- Coordination sequence T1 for Zeolite Code SBE.at n=46A033604
- Cycle of 2 steps possible for 'concatenate a(n) and nextprime(a(n)) is a prime'.at n=26A034592
- Numbers whose base-5 representation has exactly 6 runs.at n=15A043606
- Numbers n such that string 7,3 occurs in the base 10 representation of n but not of n-1.at n=35A044405
- Numbers n such that string 7,3 occurs in the base 10 representation of n but not of n+1.at n=35A044786
- Numbers n such that prime(n) - sigma(n) - phi(n) = prime(n+1) - sigma(n+1) - phi(n+1), where sigma(n) = sum of divisors of n.at n=29A048783
- Positions of 4-digit terms in the continued fraction for Pi (3 is at position 0).at n=0A048959
- Values of k for which A075059(k) = A003418(k) + 1 is prime.at n=60A049537
- Numbers k such that 181*2^k-1 is prime.at n=28A050842
- At stage 1, start with a unit square. At each successive stage add 4*(n-1) new squares around outside with edge-to-edge contacts. Sequence gives number of squares (regardless of size) at n-th stage.at n=16A056640
- Take pairs (x,y) with Sum_{j = x..y} j = concatenation of x and y. Sort pairs on y then x. This sequence gives x of each pair.at n=19A070152
- Rewrite 0->100 in the binary expansion of n.at n=41A080303
- Numbers which can be written as the product of two distinct primes and containing only prime decimal digits.at n=45A084996
- Sum of first n 3-almost primes.at n=37A086062