1173
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
- 1728
- Proper Divisor Sum (Aliquot Sum)
- 555
- 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
- 704
- Möbius Function
- -1
- Radical
- 1173
- 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
- 119
- 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
- no
- Odd
- yes
Appears in sequences
- Number of simple triangulations of the plane with n nodes.at n=8A000256
- Expansion of x^3*(5-2*x)*(1-x^3)/(1-x)^4.at n=15A000338
- Smallest natural number requiring n letters in English.at n=33A001166
- Number of letters in English name for n increases at these numbers.at n=24A001619
- Odd squarefree numbers with an odd number of prime factors that have no prime factors greater than 31.at n=48A002556
- a(n) = n*(4*n+1).at n=17A007742
- Number of 8's in all the partitions of n into distinct parts.at n=50A015743
- Number of partitions of n into distinct parts, none being 8.at n=43A015755
- Numbers k such that phi(k + 11) | sigma(k).at n=33A015831
- Powers of fifth root of 19 rounded up.at n=12A018170
- Pseudoprimes to base 47.at n=21A020175
- Numbers whose sum of divisors is a cube.at n=17A020477
- Pisot sequence T(6,10), a(n) = floor(a(n-1)^2/a(n-2)).at n=12A020741
- Convolution of Lucas numbers and A001950.at n=8A023622
- a(n) = position of n^3 + (n+1)^3 + (n+2)^3 in A003072.at n=13A024972
- Number of periodic partitions of n: each part occurs more than once and the same number of times.at n=77A024994
- Index of 7^n within the sequence of the numbers of the form 4^i*7^j.at n=40A025722
- a(n) = (d(n)-r(n))/5, where d = A026049 and r is the periodic sequence with fundamental period (4,1,4,0,1).at n=21A026051
- Numbers having period-2 4-digitized sequences.at n=25A031184
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 4.at n=21A031428