1146
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
- 8
- Divisor Sum
- 2304
- Proper Divisor Sum (Aliquot Sum)
- 1158
- 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
- 380
- Möbius Function
- -1
- Radical
- 1146
- Omega Function (Ω)
- 3
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 106
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- a(n) = 1000*log_10(n) rounded down.at n=13A004225
- a(n) = 1000*log_10(n) rounded to the nearest integer.at n=13A004226
- Number of fanout-free Boolean functions of n variables using And, Or and Not gates.at n=4A005737
- a(n) = 3 + n/2 + 7*n^2/2.at n=18A006124
- Numbers whose sum of divisors is a square.at n=50A006532
- Positive even numbers that are not the sum of a pair of twin primes.at n=21A007534
- Coordination sequence T1 for Zeolite Code BOG.at n=24A008049
- Coordination sequence T3 for Zeolite Code GOO.at n=23A008113
- Coordination sequence T4 for Zeolite Code GOO.at n=23A008114
- Coordination sequence T1 for Zeolite Code STI.at n=23A008234
- Coordination sequence T1 for Zeolite Code WEI.at n=24A009917
- Triangle of multi-edge stars with n edges by cyclotomic index.at n=49A010358
- Numbers k such that sigma(k) = sigma(k+9).at n=4A015877
- Pseudoprimes to base 49.at n=34A020177
- Numbers k such that the continued fraction for sqrt(k) has period 16.at n=50A020355
- Number of 1's in n-th term of A022470.at n=26A022472
- a(n+1) = a(n) converted to base 9 from base 6 (written in base 10).at n=9A023386
- a(n) = prime(n)*prime(n-1) - 1.at n=11A023515
- a(n) = [ C(2n,n)/2^(n+3) ].at n=16A024506
- Number of 3's in all partitions of n.at n=22A024787