2452
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 4298
- Proper Divisor Sum (Aliquot Sum)
- 1846
- 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
- 1224
- Möbius Function
- 0
- Radical
- 1226
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 40
- 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) = a(n-2) + a(n-5).at n=43A001687
- Generalized sum of divisors function.at n=36A002132
- Numbers that are the sum of 12 positive 7th powers.at n=15A003379
- Number of (undirected) Hamiltonian paths in the n-ladder graph K_2 X P_n.at n=49A003682
- Number of binary words of length n in which the ones occur only in blocks of length at least 4.at n=20A005253
- Number of points on surface of tetrahedron; coordination sequence for sodalite net (equals 2*n^2+2 for n > 0).at n=35A005893
- Coordination sequence T3 for Zeolite Code DDR.at n=31A008073
- Coordination sequence T1 for Zeolite Code ACO, ASV, EDI, and THO.at n=35A008084
- Coordination sequence T2 for Zeolite Code EDI.at n=35A008085
- Coordination sequence T2 for Zeolite Code MEI.at n=36A008147
- a(n) = n^2 + n + 2.at n=49A014206
- Expansion of 1/(1-x^6-x^7-x^8-x^9-x^10-x^11-x^12-x^13-x^14-x^15-x^16).at n=41A017856
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RSN = RUB-17 K4Na12[Zn8Si28O72].18H2O starting with a T3 atom.at n=11A019221
- Pseudoprimes to base 65.at n=21A020193
- Numbers k such that the continued fraction for sqrt(k) has period 66.at n=4A020405
- Every suffix prime and no 0 digits in base 7 (written in base 7).at n=15A024782
- Number of distinct prime signatures of the positive integers up to 2^n.at n=35A025488
- (d(n)-r(n))/5, where d = A008778 and r is the periodic sequence with fundamental period (0,3,1,0,1).at n=38A026053
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 24.at n=30A031522
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 34 ones.at n=3A031802