3267
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 5320
- Proper Divisor Sum (Aliquot Sum)
- 2053
- 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
- 1980
- Möbius Function
- 0
- Radical
- 33
- Omega Function (Ω)
- 5
- 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
- 136
- 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
- yes
- Achilles Number
- yes
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Double-bitters: only even length runs in binary expansion.at n=41A001196
- Numbers of the form 3^i*11^j.at n=18A003597
- Coordination sequence T4 for Zeolite Code MTT.at n=35A008192
- Partial sums of primes, if 1 is regarded as a prime (as it was until quite recently, see A008578).at n=41A014284
- a(1)=1; for n > 1, a(n) = 7*a(n-1) + n.at n=4A014830
- a(n) = n*(9*n - 1)/2.at n=27A022266
- Metadromes: digits in base 7 are in strict ascending order.at n=57A023776
- Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 19 (most significant digit on right and removing all least significant zeros before concatenation).at n=18A029536
- 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 57.at n=2A031555
- Numbers in which all pairs of consecutive base-8 digits differ by 3.at n=41A033079
- a(n) = 3*n^2.at n=33A033428
- Concatenations C1 and C2 are both prime (see the comment lines).at n=41A034815
- Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*11^j.at n=8A038301
- Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*9^j.at n=7A038323
- Coordination sequence T6 for Zeolite Code ESV.at n=38A038413
- Numbers whose base-5 representation has exactly 6 runs.at n=10A043606
- Numbers k such that the string 3,0 occurs in the base 9 representation of k but not of k-1.at n=45A044278
- Numbers k such that the string 4,3 occurs in the base 9 representation of k but not of k-1.at n=44A044290
- Numbers n such that string 6,7 occurs in the base 10 representation of n but not of n-1.at n=35A044399
- Numbers n such that string 6,7 occurs in the base 10 representation of n but not of n+1.at n=35A044780