3069
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
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 4992
- Proper Divisor Sum (Aliquot Sum)
- 1923
- 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
- 1800
- Möbius Function
- 0
- Radical
- 1023
- Omega Function (Ω)
- 4
- 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
- 61
- 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
- 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! - (k-1)! + (k-2)! - (k-3)! + ... - (-1)^k*1! is prime.at n=16A001272
- Divisors of 2^30 - 1.at n=30A003538
- Coordination sequence T1 for Zeolite Code ATS.at n=40A008038
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RUT = RUB-10 R4[B4Si32O72] starting from a T2 atom.at n=11A019233
- a(n) = n*(19*n - 1)/2.at n=18A022276
- Sequence A025513 divided by 2.at n=26A025514
- Sequence satisfies T(T(a))=a, where T is defined below.at n=53A027581
- Odd numbers in the (2,3)-Pascal triangle A029600.at n=47A029604
- Odd numbers in the (2,3)-Pascal triangle A029600 that are different from 3.at n=35A029606
- Distinct odd numbers in (2,3)-Pascal triangle A029600.at n=31A029608
- Numbers to the left of the central numbers of the (2,3)-Pascal triangle A029600.at n=47A029610
- Numbers to the left of the central elements of the (2,3)-Pascal triangle A029600 that are different from 2.at n=34A029611
- Odd numbers to the left of the central elements of the (2,3)-Pascal triangle A029600.at n=20A029612
- Odd numbers in (3,2)-Pascal triangle A029618.at n=48A029622
- Odd numbers in (3,2)-Pascal triangle A029618 that are different from 3.at n=35A029624
- Distinct odd numbers in (3,2)-Pascal triangle A029618.at n=31A029626
- Numbers to right of central elements of the (3,2)-Pascal triangle A029618.at n=43A029632
- Numbers to right of central elements of the (3,2)-Pascal triangle A029618 that are different from 2.at n=31A029633
- Odd numbers to right of central elements of the (3,2)-Pascal triangle A029618.at n=19A029634
- Numbers whose base-4 representation has 4 fewer 0's than 3's.at n=29A031469