2194
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3294
- Proper Divisor Sum (Aliquot Sum)
- 1100
- 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
- 1096
- Möbius Function
- 1
- Radical
- 2194
- Omega Function (Ω)
- 2
- 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
- 138
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- yes
- Odd
- no
Appears in sequences
- Numbers k such that phi(2k+1) < phi(2k).at n=28A001837
- Max_{k=0..n} { Number of partitions of n into exactly k parts }.at n=37A002569
- Numbers that are the sum of 10 positive 6th powers.at n=30A003366
- Numbers that are the sum of 8 positive 7th powers.at n=9A003375
- Numbers that are the sum of at most 8 positive 7th powers.at n=52A004870
- Prime(n)*...*prime(a(n)) is the least product of consecutive primes that is non-deficient.at n=31A007684
- Number of partitions of n in which no part occurs just once.at n=42A007690
- Prime(n)*...*prime(a(n)) is the least product of consecutive primes which is abundant.at n=31A007707
- Coordination sequence T5 for Zeolite Code NES.at n=30A008209
- Molien series for A_9.at n=28A008632
- Number of partitions of n into at most 9 parts.at n=28A008638
- Number of immersions of an unoriented circle into the unoriented sphere with n double points.at n=7A008989
- Numbers k such that the continued fraction for sqrt(k) has period 50.at n=5A020389
- Fibonacci sequence beginning 2, 14.at n=12A022369
- Number of partitions of n into 9 unordered relatively prime parts.at n=28A023029
- Index of 10^n within the sequence of the numbers of the form 3^i*10^j.at n=45A025741
- Number of partitions of n in which the greatest part is 9.at n=37A026815
- Numbers whose base-3 representation has 4 more 0's than 2's.at n=35A031456
- 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 46.at n=6A031544
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 24 ones.at n=14A031792