1126
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1692
- Proper Divisor Sum (Aliquot Sum)
- 566
- 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
- 562
- Möbius Function
- 1
- Radical
- 1126
- 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
- 44
- 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
- The square sieve.at n=60A002960
- Numbers that are the sum of 10 positive 5th powers.at n=46A003355
- Coordination sequence T5 for Zeolite Code EUO.at n=21A008100
- Coordination sequence T8 for Zeolite Code MFS.at n=21A008180
- Number of triples of different integers from [ 2,n ] with no global factor.at n=20A015618
- Expansion of 1/(1-x^4-x^5-x^6-x^7-x^8-x^9-x^10).at n=29A017832
- Fibonacci sequence beginning 4, 18.at n=10A022384
- Place where n-th 1 occurs in A023117.at n=31A022779
- a(n) = floor((4th elementary symmetric function of S(n))/(3rd elementary symmetric function of S(n))), where S(n) = {first n+3 positive integers congruent to 1 mod 3}.at n=53A024224
- Position of 1 + n^3 in A003325.at n=50A024668
- Least k such that first k terms of A006928 contain n more 1's than 2's.at n=8A025506
- Index of 5^n within the sequence of the numbers of the form 5^i*6^j.at n=49A025707
- Index of 10^n within the sequence of the numbers of the form 6^i*10^j.at n=41A025744
- T(2n,n+3), T given by A026769.at n=4A026885
- Uniquification of A026998.at n=62A026999
- a(n) = A027052(n, 2n-3).at n=7A027059
- Greatest number in row n of array T given by A027052.at n=9A027071
- a(n) = Sum_{k=0..floor((n+1)/2)} (k+1) * A008315(n, k).at n=9A027305
- Sequence satisfies T^2(a)=a, where T is defined below.at n=44A027584
- a(n) = n^2 + n + 4.at n=33A027689