1204
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 7
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 2464
- Proper Divisor Sum (Aliquot Sum)
- 1260
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 504
- Möbius Function
- 0
- Radical
- 602
- Omega Function (Ω)
- 4
- 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
- 18
- 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 tournaments on n nodes determined by their score vectors.at n=14A000570
- Number of switching networks with GL(n,2) acting on the domain and GL(3,2) acting on the range.at n=2A000878
- Endpoints (leaves) in rooted trees with n nodes.at n=8A003227
- a(n) = 1000*log_10(n) rounded down.at n=15A004225
- a(n) = 1000*log_10(n) rounded to the nearest integer.at n=15A004226
- Primes written in base 5.at n=40A004679
- Alkane (or paraffin) numbers l(7,n).at n=13A005994
- Number of partitions of n into partition numbers.at n=35A007279
- Coordination sequence T2 for Zeolite Code APC.at n=24A008033
- Coordination sequence T1 for Zeolite Code FAU.at n=29A008105
- Molien series for A_10.at n=24A008633
- Number of partitions of n into at most 10 parts.at n=24A008639
- Coordination sequence T3 for Zeolite Code VET.at n=21A009904
- Sum along upward diagonal of Pascal triangle from halfway point.at n=16A010759
- Pisot sequence E(8,10), a(n) = floor( a(n-1)^2/a(n-2) + 1/2 ).at n=20A010916
- Expansion of e.g.f.: cosh(sinh(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+43/4!*x^4-170/5!*x^5...at n=6A013022
- Apply partial sum operator 4 times to Fibonacci numbers.at n=9A014166
- Sum of Gaussian binomial coefficients for q=24.at n=3A015217
- Numbers k such that k | 7^k + 7.at n=16A015893
- Number of lines through exactly 8 points of an n X n grid of points.at n=38A018815