3728
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 10
- Divisor Sum
- 7254
- Proper Divisor Sum (Aliquot Sum)
- 3526
- 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
- 1856
- Möbius Function
- 0
- Radical
- 466
- Omega Function (Ω)
- 5
- 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
- 87
- 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
- Number of partitions with no even part repeated; partitions of n in which no parts are multiples of 4.at n=33A001935
- Number of points on surface of truncated cube: a(n) = 46*n^2 + 2 for n > 0.at n=9A005911
- Let S denote the palindromes in the language {0,1}*; a(n) = number of words of length n in the language SS.at n=15A007055
- Coordination sequence T1 for Zeolite Code ATV.at n=39A008043
- Coordination sequence T2 for Zeolite Code ATV.at n=39A008044
- Coordination sequence T4 for Zeolite Code BRE.at n=40A008061
- Coordination sequence T2 for feldspar.at n=41A008255
- Coordination sequence T2 for Zeolite Code -WEN.at n=44A009863
- Coordination sequence T3 for Zeolite Code -WEN.at n=44A009864
- Coordination sequence T7 for Zeolite Code VNI.at n=38A009913
- Expansion of 1/(1-x^3-x^4-x^5-x^6-x^7-x^8-x^9-x^10-x^11-x^12).at n=26A017825
- Define the sequence S(a(0),a(1)) by a(n+2) is the least integer such that a(n+2)/a(n+1) > a(n+1)/a(n) for n >= 0. This is S(1,5).at n=5A018903
- First row of spectral array W(sqrt(5)-1).at n=9A022165
- Fibonacci sequence beginning 0, 16.at n=13A022350
- (d(n)-r(n))/5, where d = A026046 and r is the periodic sequence with fundamental period (1,0,4,0,0).at n=34A026048
- Expansion of (theta_3(z)*theta_3(17z)+theta_2(z)*theta_2(17z))^4.at n=40A028636
- Every run of digits of n in base 15 has length 2.at n=21A033013
- Numbers whose base-15 expansion has no run of digits with length < 2.at n=36A033028
- Positions of incrementally largest terms in continued fraction for Copeland-Erdős constant.at n=10A033311
- Number of partitions of n with equal nonzero number of parts congruent to each of 0 and 3 (mod 4).at n=38A035548