1115
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1344
- Proper Divisor Sum (Aliquot Sum)
- 229
- 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
- 888
- Möbius Function
- 1
- Radical
- 1115
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 93
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers k such that (k / product of digits of k) is 1 or a prime.at n=19A001103
- Describe the previous term! (method A - initial term is 5).at n=2A001141
- Smallest natural number requiring n letters in English.at n=28A001166
- Number of partitions of n into at most 5 parts.at n=35A001401
- Primes multiplied by 5.at n=47A001750
- Number of partially achiral trees with n nodes.at n=14A003243
- Numbers that are the sum of 9 positive 6th powers.at n=16A003365
- Number of distinct autocorrelations of binary words of length n.at n=40A005434
- Numbers n such that n! has a square number of digits.at n=27A006488
- A subclass of 2n-node trivalent planar graphs without triangles.at n=5A006795
- Numbers that are divisible by the product of their digits.at n=37A007602
- Coordination sequence T1 for Zeolite Code AEL.at n=22A008004
- Coordination sequence T3 for Zeolite Code AET.at n=23A008009
- Expansion of (1+x^11)/((1-x)*(1-x^2)*(1-x^3)*(1-x^4)).at n=43A008772
- E.g.f.: exp(arcsin(x)+log(x+1)).at n=7A012899
- Multiplicity of trivial character in V_n, where V = Sum V_n is the graded module for the Monster simple group.at n=27A014810
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MTN = ZSM-39 [Si136O272].qR starting with a T3 atom.at n=10A019183
- Define the sequence S(a(0),a(1)) by a(n+2) is the least integer such that a(n+2)/a(n+1) > a(n+1)/a(n) for n >= 0. This is S(4,12) (agrees with A019481 for n <= 19 only).at n=5A019480
- a(n) = 3*a(n-1) + a(n-2) - 2*a(n-3) (agrees with A019480 for n <= 19 only).at n=5A019481
- Numbers k such that the continued fraction for sqrt(k) has period 14.at n=50A020353