2692
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 4718
- Proper Divisor Sum (Aliquot Sum)
- 2026
- 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
- 1344
- Möbius Function
- 0
- Radical
- 1346
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 66
- 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
- Number of Twopins positions.at n=15A005684
- Witt vector *2!/2!.at n=8A006177
- Coordination sequence T2 for Zeolite Code BRE.at n=34A008059
- Coordination sequence T1 for Zeolite Code LTA and RHO.at n=41A008137
- Coordination sequence T2 for Scapolite.at n=33A008263
- Strobogrammatic numbers: numbers that are the same upside down (using calculator-style numerals).at n=52A018846
- Numbers k such that the continued fraction for sqrt(k) has period 58.at n=6A020397
- a(n) = position of n^3 + (n+1)^3 + (n+2)^3 in A003072.at n=18A024972
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 26 ones.at n=18A031794
- Numbers k such that string 2,1 occurs in the base 9 representation of k but not of k-1.at n=37A044270
- Numbers n such that string 9,2 occurs in the base 10 representation of n but not of n-1.at n=28A044424
- Numbers n such that string 2,1 occurs in the base 9 representation of n but not of n+1.at n=37A044651
- Numbers k such that string 9,2 occurs in the base 10 representation of k but not of k+1.at n=28A044805
- 4-digit terms in the continued fraction for Pi.at n=27A048958
- Number of nonaveraging subsets on {1,2,...,n}.at n=15A051013
- Intrinsic 8-palindromes: n is an intrinsic k-palindrome if it is a k-digit palindrome in some base.at n=14A060878
- Composite numbers k such that the sum of the proper divisors of k not including 1, (Chowla's function, A048050) and their product (A007956) are both perfect squares.at n=12A064180
- Numbers beginning and ending with their multiplicative digital root.at n=23A064704
- Number of partitions of n into odious numbers (A000069).at n=42A067590
- Determinant of the n X n matrix m(i,j)=i^j+j^i.at n=3A071409