14945
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 21204
- Proper Divisor Sum (Aliquot Sum)
- 6259
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 10080
- Möbius Function
- 0
- Radical
- 2135
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 3
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
- 71
- 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
- Expansion of 1/((1-3*x)*(1-5*x)*(1-8*x)).at n=4A017521
- Number of partitions of n into 7 unordered relatively prime parts.at n=48A023027
- a(n) = 7 + floor(Sum_{j=1..n-1} a(j) / 2).at n=19A120136
- Number of bridged bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition).at n=9A121330
- Number of C_4-free Berge perfect graphs on n nodes.at n=8A123411
- Partial sums of A002522, starting at n=1.at n=34A145066
- Numbers of the form 49*k, where 49*k+2 and 49*k-6 are both prime.at n=6A153779
- Positive numbers y such that y^2 is of the form x^2+(x+833)^2 with integer x.at n=33A156835
- a(n) is the n-th J_4-prime (Josephus_4 prime).at n=9A163784
- a(n) = Sum of all numbers of divisors of all numbers < (n+1)^2.at n=42A168011
- Hypotenuse of the smallest Pythagorean triple whose legs are m and 2m + n.at n=48A216260
- Number of (n+3) X 7 0..2 matrices with each 4 X 4 subblock idempotent.at n=9A224724
- Number of simply-typed normal forms of lambda-terms of size n.at n=16A294451
- a(n) = p(n)*p(n+1)*(p(n+1) - p(n)) - 1, where p(n) = prime(n).at n=14A383241