14771
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 14772
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 14770
- Möbius Function
- -1
- Radical
- 14771
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- 71
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1731
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Let A(n) = #{(i,j,k): i^2 + j^2 + k^2 <= n}, V(n) = (4/3)*Pi*n^(3/2), P(n) = A(n) - V(n); A000092 gives values of n where |P(n)| sets a new record; sequence gives A(A000092(n)).at n=14A000413
- Smallest prime p==3 (mod 8) such that Q(sqrt(-p)) has class number 2n+1.at n=25A002148
- Primes of the form k^2 + k + 9.at n=15A027758
- Numbers whose set of base-9 digits is {2,3}.at n=32A032809
- Numbers having four 2's in base 9.at n=16A043464
- Numbers whose base-11 representation has exactly 5 runs.at n=8A043648
- Primes p whose period of reciprocal equals (p-1)/7.at n=14A056212
- Primes having only {1, 4, 7} as digits.at n=37A079651
- Pseudo-random numbers: MS C 6.0 version.at n=32A084275
- Prime arithmetic mean of ten consecutive primes.at n=32A123096
- Primes p that divide Fibonacci[(p-1)/7].at n=21A125253
- Numbers k such that k and k^2 use only the digits 1, 2, 4, 7 and 8.at n=26A136997
- Primes of the form 210n+71.at n=36A140856
- Numbers k such that (k,k+8) forms a pair of consecutive primes ending respectively in 1 and 9.at n=38A141026
- Primes congruent to 11 mod 41.at n=40A142208
- Primes congruent to 22 mod 43.at n=38A142271
- Primes congruent to 13 mod 47.at n=36A142364
- Primes congruent to 22 mod 49.at n=38A142432
- Primes congruent to 37 mod 53.at n=31A142567
- Primes congruent to 21 mod 59.at n=30A142748