3427
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
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3600
- Proper Divisor Sum (Aliquot Sum)
- 173
- 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
- 3256
- Möbius Function
- 1
- Radical
- 3427
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 30
- 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
- Number of self-dual codes of length 2n over GF(4).at n=10A001646
- Least k such that binomial(k,n) has n or more distinct prime factors.at n=48A005733
- Coordination sequence T11 for Zeolite Code MFI.at n=37A008163
- Coordination sequence T2 for Zeolite Code ZON.at n=41A009920
- a(n) = floor(n*(n-1)*(n-2)/16).at n=39A011898
- Fibonacci sequence beginning 1, 5.at n=15A022095
- a(n) = n*(13*n - 1)/2.at n=23A022270
- Expansion of 1/Product_{m>=1} (1 - m*q^m)^23.at n=3A022747
- Coordination sequence T1 for Zeolite Code IFR.at n=41A024982
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = (primes).at n=17A025117
- Clog sequence in base 2. Right to left concatenation of n,int(log_2(n)),int(log_2(int(log_2(n)))),... in base 2.at n=34A028423
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 19 ones.at n=0A031787
- Lucky numbers with size of gaps equal to 16 (upper terms).at n=10A031899
- a(n)-th and (a(n)+1)-st primes are the first pair of primes that differ by exactly 2n; a(n) = -1 if no such pair of primes exists.at n=24A038664
- Denominators of continued fraction convergents to sqrt(554).at n=8A042061
- Numbers whose base-15 representation has exactly 4 runs.at n=34A043671
- Numbers n such that string 2,7 occurs in the base 10 representation of n but not of n-1.at n=38A044359
- Numbers n such that string 2,7 occurs in the base 10 representation of n but not of n+1.at n=38A044740
- Numbers whose base-5 representation contains exactly two 0's and three 2's.at n=8A045183
- Discriminants of imaginary quadratic fields with class number 6 (negated).at n=48A046003