14637
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 24192
- Proper Divisor Sum (Aliquot Sum)
- 9555
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7680
- Möbius Function
- 1
- Radical
- 14637
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- 133
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- 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
- Positive numbers k such that k and 2*k are anagrams in base 8 (written in base 8).at n=29A023073
- Positive numbers k such that k and 4*k are anagrams in base 8 (written in base 8).at n=18A023075
- a(n) = 11^n - n.at n=4A024128
- Starting positions of strings of 3 0's in the decimal expansion of Pi.at n=11A050202
- 53 'Reverse and Add' steps are needed to reach a palindrome.at n=4A065320
- Numbers k that divide 2^(k+3) - 1.at n=46A069927
- a(n) = (4*n+3)*(4*n+7).at n=29A085027
- Third trisection of A061037.at n=39A142600
- a(n) = A061037(7*n+2).at n=17A165943
- Trisection A061037(3*n-2) of the Balmer spectrum numerators extended to negative indices.at n=41A174325
- a(n)=Product{k=0..n, A001333(k)}.at n=5A186271
- 17 times triangular numbers.at n=41A195037
- Nonnegative values x of solutions (x, y) to the Diophantine equation x^2 + (x+84847)^2 = y^2.at n=10A201917
- -3-Knödel numbers.at n=26A225507
- Composite squarefree numbers k such that the arithmetic mean of the distinct prime factors of k is a prime p, and p divides k.at n=25A229094
- a(n) = Sum_{m=0..floor((n-1)/2)} prime((n-m)(n-m-1)/2+m+1).at n=24A249490
- Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 910", based on the 5-celled von Neumann neighborhood.at n=7A273763
- Numbers k for which rank of the elliptic curve y^2=x^3-k*x is 4.at n=10A309034
- Least k such that the rank of the elliptic curve y^2 = x^3 + k^2*x is n.at n=4A309060
- Triangle of integers related to generalized Markov numbers, read by rows.at n=9A357870