1262
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1896
- Proper Divisor Sum (Aliquot Sum)
- 634
- 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
- 630
- Möbius Function
- 1
- Radical
- 1262
- 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
- 39
- 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
- Number of (undirected) Hamiltonian paths in the n-ladder graph K_2 X P_n.at n=35A003682
- Number of loopless rooted planar maps with 4 faces and n vertices and no isthmuses.at n=4A006417
- Coordination sequence T2 for Zeolite Code AFR.at n=27A008020
- Coordination sequence T5 for Zeolite Code GOO.at n=24A008115
- Coordination sequence T2 for Zeolite Code MFS.at n=22A008174
- Number of immersions of the oriented circle into the oriented plane with n double points.at n=5A008980
- Coordination sequence T1 for Zeolite Code AHT.at n=24A009866
- a(n) = n^2 + n + 2.at n=35A014206
- Powers of sqrt(3) rounded down.at n=13A017913
- Powers of fourth root of 3 rounded down.at n=26A018051
- Numbers k such that the continued fraction for sqrt(k) has period 24.at n=16A020363
- Ordered sequence of distinct terms of the form floor(x^i * floor(x^j)), i,j >= 0, where x = sqrt(3).at n=30A022769
- Numbers with exactly 3 2's in base 5 expansion.at n=32A023732
- [ (4th elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+3 positive integers congruent to 1 mod 3}.at n=7A024223
- a(n) = position of n^3 + (n+1)^3 in A024670 (distinct sums of cubes of distinct positive integers).at n=42A024674
- Numbers that are the sum of 3 nonzero squares in exactly 9 ways.at n=24A025329
- Numbers that are the sum of 3 distinct nonzero squares in exactly 9 ways.at n=13A025347
- Numbers that are the sum of 3 distinct nonzero squares in 9 or more ways.at n=41A025355
- a(n) = sum of the numbers between the two n's in A026276.at n=32A026279
- a(n) = Sum_{i=0..n} Sum_{j=0..n} T(i,j), T given by A026780.at n=8A026789