4512
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
- 2
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 12096
- Proper Divisor Sum (Aliquot Sum)
- 7584
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1472
- Möbius Function
- 0
- Radical
- 282
- Omega Function (Ω)
- 7
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 20
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- yes
- Odd
- no
Appears in sequences
- Number of filaments with n square cells.at n=13A002013
- Hit polynomials, coefficient of y^2 in N_n(y).at n=4A004309
- Coordination sequence T3 for Zeolite Code BRE.at n=44A008060
- Coordination sequence T3 for Zeolite Code DDR.at n=42A008073
- Coordination sequence T1 for Banalsite.at n=40A008249
- Coordination sequence T2 for Banalsite.at n=40A008250
- Coordination sequence T1 for Moganite.at n=43A008258
- a(n) = floor( n*(n-1)*(n-2)/23 ).at n=48A011905
- Number of partitions of n into distinct parts, none being 8.at n=55A015755
- Positive numbers having the same set of digits in base 7 and base 8.at n=40A037438
- Denominators of continued fraction convergents to sqrt(699).at n=9A042345
- Numbers whose base-5 representation contains exactly two 1's and three 2's.at n=29A045228
- 4 times triangular numbers: a(n) = 2*n*(n+1).at n=47A046092
- Numbers n such that 249*2^n-1 is prime.at n=14A050883
- Lesser members of g-reduced amicable pairs a < b such that sigma(a) = sigma(b) = a + b + gcd(a,b).at n=25A054573
- Numbers k such that phi(x) = k has exactly 12 solutions.at n=15A060675
- Least k such that k*5^n +/- 1 are twin primes.at n=39A064214
- Numbers k such that k^2 + prime(k) and k^2 - prime(k) are both primes.at n=28A064483
- Number of basis partitions (or basic partitions) of n.at n=43A066447
- Numbers having exactly twelve anti-divisors.at n=22A066478