3501
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 9
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 5070
- Proper Divisor Sum (Aliquot Sum)
- 1569
- 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
- 2328
- Möbius Function
- 0
- Radical
- 1167
- Omega Function (Ω)
- 3
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 30
- 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
- Coordination sequence T1 for Zeolite Code AEL.at n=39A008004
- Coordination sequence T2 for Zeolite Code AEL.at n=39A008005
- Coordination sequence T2 for Zeolite Code DDR.at n=37A008072
- Crystal ball sequence for planar net 3.6.3.6.at n=39A008580
- Iccanobif numbers: add previous two terms and reverse the sum.at n=12A014258
- Numbers whose set of base-7 digits is {1,3}.at n=40A032914
- Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 1,3.at n=4A037579
- Partial sums of primes congruent to 1 mod 6.at n=26A038349
- Base-7 palindromes that start with 1.at n=38A043015
- Numbers n such that string 0,1 occurs in the base 10 representation of n but not of n-1.at n=37A044333
- Numbers n such that string 0,1 occurs in the base 10 representation of n but not of n+1.at n=37A044714
- Numbers whose base-5 representation contains exactly three 0's and two 1's.at n=34A045171
- Coordination sequence T3 for Zeolite Code ISV.at n=41A047960
- n plus a googol is prime.at n=10A049014
- Triangle: Number of asymmetric self-converse semigroups of order n with k idempotents.at n=24A058169
- Difference between average of smallest prime greater than n^3 and largest prime less than (n+1)^3 and n-th pronic [=n(n+1)].at n=13A063036
- Number of integers k such that phi(k) = 10^n.at n=18A072074
- a(n) = A077741(n)/n.at n=40A077742
- Define two sequences by A_n = mex{A_i,B_i : 0 <= i < n} for n >= 0, B_0=0, B_1=1 and for n >= 2, B_n = 2B_{n-1}+(-1)^{A_n}. Sequence gives B_n.at n=12A080241
- Square array of binomial transforms of Chebyshev polynomial coefficients.at n=49A081281