3175
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 3968
- Proper Divisor Sum (Aliquot Sum)
- 793
- 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
- 2520
- Möbius Function
- 0
- Radical
- 635
- Omega Function (Ω)
- 3
- 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
- 198
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Total height of trees with n nodes.at n=9A001853
- Number of two-rowed partitions of length 3.at n=28A001993
- Number of 3rd-order maximal independent sets in cycle graph.at n=37A007387
- Coordination sequence T3 for Zeolite Code BRE.at n=37A008060
- Coordination sequence T4 for Zeolite Code MEI.at n=41A008149
- Powers of sqrt(6) rounded to nearest integer.at n=9A017923
- Powers of sqrt(6) rounded up.at n=9A017924
- Powers of fourth root of 6 rounded to nearest integer.at n=18A018061
- Powers of fourth root of 6 rounded up.at n=18A018062
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly nine 1's.at n=6A020445
- a(n) = (1/(4*n)) * Sum_{d|n} mu(n/d) * binomial(2*d, d)^2.at n=4A028576
- Lucky numbers with size of gaps equal to 8 (lower terms).at n=36A031890
- Number of partitions of n into parts not of the form 13k, 13k+5 or 13k-5. Also number of partitions with at most 4 parts of size 1 and differences between parts at distance 5 are greater than 1.at n=30A035953
- Number of partitions of n into parts not of the form 21k, 21k+6 or 21k-6. Also number of partitions with at most 5 parts of size 1 and differences between parts at distance 9 are greater than 1.at n=28A035984
- Nearest integer to n^(9/2).at n=6A036494
- Number of refactorable integers (A033950) of binary order (A029837) n.at n=17A036761
- Numbers having four 0's in base 5.at n=13A043352
- Numbers n such that string 7,5 occurs in the base 10 representation of n but not of n-1.at n=34A044407
- Numbers n such that string 7,5 occurs in the base 10 representation of n but not of n+1.at n=34A044788
- Number of conjugacy classes of elements of order n in E_8(C).at n=21A045514