3020
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 5
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 6384
- Proper Divisor Sum (Aliquot Sum)
- 3364
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1200
- Möbius Function
- 0
- Radical
- 1510
- 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
- yes
- Harshad Number
- yes
- Narcissistic Number
- no
- Collatz Steps
- 66
- 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
- yes
- Odd
- no
Appears in sequences
- a(n) = solution to the postage stamp problem with 3 denominations and n stamps.at n=34A001208
- a(n) = floor(Pi^n).at n=7A001672
- Nearest integer to Pi^n.at n=7A002160
- Numbers k such that 2*10^k - 1 is prime.at n=18A002957
- Coordination sequence T10 for Zeolite Code MFI.at n=35A008162
- Coordination sequence T7 for Zeolite Code MFI.at n=35A008170
- Coordination sequence T4 for Zeolite Code MFS.at n=34A008176
- Coordination sequence T8 for Zeolite Code MFS.at n=34A008180
- Coordination sequence T3 for Zeolite Code VNI.at n=34A009909
- a(n) = floor(n*(n-1)*(n-2)/13).at n=35A011895
- Coordination sequence T1 for Zeolite Code OSI.at n=36A016430
- Ordered sequence of distinct terms of the form floor(Pi^i * floor(Pi^j)), i, j >= 0.at n=22A022767
- Theta series of 10-dimensional 2-modular lattice of minimal norm 2.at n=6A029545
- Positions of record values in A030747.at n=49A030752
- Positive numbers having the same set of digits in base 4 and base 10.at n=22A037428
- Coordination sequence T4 for Zeolite Code AFN.at n=39A038404
- Denominators of continued fraction convergents to sqrt(228).at n=3A041425
- Numbers k such that the string 2,5 occurs in the base 9 representation of k but not of k-1.at n=41A044274
- Numbers n such that string 0,2 occurs in the base 10 representation of n but not of n-1.at n=32A044334
- Numbers n such that string 2,0 occurs in the base 10 representation of n but not of n-1.at n=33A044352