2703
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 12
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 3888
- Proper Divisor Sum (Aliquot Sum)
- 1185
- 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
- 1664
- Möbius Function
- -1
- Radical
- 2703
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 159
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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) = 4*n^2 - 1.at n=26A000466
- Expansion of Product (1 - x^k)^8 in powers of x.at n=56A000731
- Numbers that are the sum of 9 positive 7th powers.at n=14A003376
- Symmetries in unrooted 4-trees on n+1 vertices.at n=11A003616
- Coordination sequence T3 for Zeolite Code AFS and BPH.at n=40A008025
- Coordination sequence T8 for Zeolite Code EUO.at n=32A008103
- Coordination sequence T2 for Zeolite Code MTW.at n=34A008197
- Coordination sequence T3 for Zeolite Code VNI.at n=32A009909
- Number of Barlow packings with group P3(bar)m1(S) that repeat after 2n layers.at n=14A011951
- Powers of fifth root of 8 rounded up.at n=19A018137
- Conjectured formula for irreducible 5-fold Euler sums of weight 2n+13.at n=27A019450
- Pseudoprimes to base 52.at n=13A020180
- Numbers n such that prime(n) mod n <= 10.at n=42A022465
- Numbers k such that prime(k) == 10 (mod k).at n=4A023152
- Convolution of A023532 and (1, p(1), p(2), ...).at n=42A023598
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = A014306, t = (primes).at n=45A024696
- Least D in the Pellian x^2 - D*y^2 = 1 for which x has least solution n.at n=50A033314
- a(n) = 2*n^2 + 3*n + 3.at n=36A033816
- a(n+1) = a(n) + sum of squares of digits of a(n).at n=39A033936
- Expansion of 1/((1 - x)*(1 - 4*x + 2 * x^2)).at n=6A035344