3515
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 4560
- Proper Divisor Sum (Aliquot Sum)
- 1045
- 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
- 2592
- Möbius Function
- -1
- Radical
- 3515
- 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
- 149
- 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 polyhedral graphs with n nodes and minimal degree 4.at n=8A007025
- Coordination sequence T1 for Zeolite Code AFO.at n=39A008015
- Coordination sequence T4 for Zeolite Code BOG.at n=42A008052
- Quadruples of different integers from [ 1,n ] with no common factors between pairs.at n=28A015623
- Expansion of 1/((1-8*x)*(1-11*x)).at n=3A016187
- Convolution of A023532 and (1, p(1), p(2), ...).at n=47A023598
- Every prefix prime in base 6 (written in base 6).at n=20A024766
- Every prefix and suffix prime in base 6 (written in base 6).at n=8A024774
- Every suffix prime and no 0 digits in base 6 (written in base 6).at n=34A024781
- 5 times triangular numbers: a(n) = 5*n*(n+1)/2.at n=37A028895
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 11.at n=31A031509
- Numbers whose square contains no loops in its digits (assumes 1, 2, 3, 5, 7 have no loops and 0, 4, 6, 8, 9 do).at n=39A034905
- a() = 1,3,... [ A037257 ], differences = 2,... [ A037258 ] and 2nd differences [ A037259 ] are disjoint and monotonic; adjoin next free number to 2nd differences unless it would produce a duplicate in which case ignore.at n=23A037257
- Replace n with concatenation of its divisors >1.at n=14A037277
- Replace n with concatenation of its odd divisors >1.at n=29A037284
- Replace n with concatenation of its odd divisors >1.at n=14A037284
- Replace n with concatenation of its nontrivial odd divisors.at n=29A037285
- Replace n with concatenation of its nontrivial odd divisors.at n=59A037285
- Replace 2n+1 with concatenation of its divisors >1.at n=7A037287
- Positive numbers having the same set of digits in base 7 and base 10.at n=22A037440