3245
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
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 4320
- Proper Divisor Sum (Aliquot Sum)
- 1075
- 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
- 2320
- Möbius Function
- -1
- Radical
- 3245
- 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
- 136
- 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
- a(n) = (6*n+1)*(6*n+5).at n=9A001513
- Coordination sequence T1 for Zeolite Code FER.at n=35A008106
- Coordination sequence T10 for Zeolite Code MFI.at n=36A008162
- Coordination sequence T2 for Zeolite Code -ROG.at n=43A009860
- Coordination sequence T3 for Zeolite Code CGS.at n=42A027367
- Number of primes less than 1000n.at n=29A038812
- Number of primes less than 10000n.at n=2A038813
- Denominators of continued fraction convergents to sqrt(826).at n=10A042595
- Numbers n such that string 4,5 occurs in the base 10 representation of n but not of n-1.at n=35A044377
- Numbers n such that string 4,5 occurs in the base 10 representation of n but not of n+1.at n=35A044758
- Numbers whose base-5 representation contains exactly three 0's and two 4's.at n=6A045216
- Least positive integer k such that the number having periodic continued fraction [ 1,m,1,m,1,m,... ] is of form (a+b*sqrt(k))/c, where a,b,c are positive integers.at n=54A049457
- a(0) = 0; for n>0, a(n) = A005598(n)/2.at n=39A049703
- a(n) = n^n + n!.at n=4A053042
- Sum of numbers in range 10*n to 10*n+9.at n=32A053743
- (tau<=)_6(n).at n=43A061204
- Non-balanced numbers in A015765.at n=14A074868
- Expansion of (1-x)^(-1)/(1-x+x^3).at n=63A077869
- a(n) = (2*n+5)*(2*n+1).at n=27A078371
- Difference between the sum of next prime(n) natural numbers and the sum of next n primes.at n=12A082749