2966
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4452
- Proper Divisor Sum (Aliquot Sum)
- 1486
- 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
- 1482
- Möbius Function
- 1
- Radical
- 2966
- 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
- 141
- 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
- yes
- Odd
- no
Appears in sequences
- Let A(n) = #{(i,j,k): i^2 + j^2 + k^2 <= n}, V(n) = (4/3)Pi*n^(3/2), P(n) = A(n) - V(n); sequence gives values of n where |P(n)| sets a new record.at n=30A000092
- Coordination sequence T4 for Zeolite Code MEL.at n=35A008153
- Coordination sequence T4 for Zeolite Code MOR.at n=35A008185
- Coordination sequence T5 for Zeolite Code RUT.at n=36A009901
- Partial sums of the sequence of prime powers (A000961).at n=48A024918
- Least sum of 3 distinct nonzero squares in exactly n ways.at n=20A025415
- T(2n-1,n-2), T given by A026659.at n=5A026664
- Numbers k such that k*(k+2) is a palindrome.at n=15A028503
- 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 54.at n=4A031552
- Numerators of continued fraction convergents to sqrt(714).at n=8A042374
- Numbers n such that string 5,5 occurs in the base 9 representation of n but not of n-1.at n=36A044301
- Numbers n such that string 6,6 occurs in the base 10 representation of n but not of n-1.at n=29A044398
- Numbers n such that string 5,5 occurs in the base 9 representation of n but not of n+1.at n=36A044682
- Numbers n such that string 6,6 occurs in the base 10 representation of n but not of n+1.at n=29A044779
- Numbers n such that replacing digits d in decimal expansion of n with d^2 yields a square.at n=48A048386
- a(n)=T(n,n+2), array T as in A048149.at n=42A049718
- Numbers k such that 297*2^k-1 is prime.at n=28A050907
- Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 18.at n=25A050967
- a(n) = 2*(n^2 - n + 1).at n=39A051890
- Triangle of partial row sums of triangle A037027(n,m), n >= m >= 0 (Fibonacci convolution triangle).at n=59A054446