7652
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 13398
- Proper Divisor Sum (Aliquot Sum)
- 5746
- 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
- 3824
- Möbius Function
- 0
- Radical
- 3826
- 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
- 83
- 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
- Erroneous version of A032522.at n=16A000017
- n written in fractional base 8/7.at n=26A024649
- Numbers k such that k^2 and k^3 have the same set of digits.at n=8A029797
- Incorrect version of A091967.at n=16A031135
- Incorrect version of A107357.at n=16A037181
- Sum{T(i,n-i): i=0,1,...,n}, array T as in A047030.at n=14A047031
- a(n) is the n-th term in sequence A_n, respecting the offset, or a(n) = -1 if A_n has fewer than n terms.at n=16A051070
- Triangle T(n,k) read by rows; given by [0,1,0,1,0,1,0,1,...] DELTA [1,1,1,2,1,3,1,4,1,5,1,6,...], where DELTA is Deléham's operator defined in A084938.at n=41A085838
- a(n) is the n-th term of sequence A_n, ignoring the offset, or -1 if A_n has fewer than n terms.at n=16A091967
- a(n) = 3*a(n-1) + 5 with a(0) = 1.at n=7A116952
- Moebius transform of tetrahedral numbers.at n=34A117108
- Number of partitions of the n-th triangular number n(n+1)/2 into distinct odd parts.at n=15A126683
- Numbers such that the digital sums in bases 2, 3, 5 and 7 all are equal.at n=10A135127
- Coefficients in the expansion of C^2/B^3, in Watson's notation of page 118.at n=12A160526
- The number of elements in S_4\det^{-1}(n)/GL(4,Z), where we take det : M_{4 X 4} (Z) => Z.at n=44A162159
- Total number of possible standard knight moves on an n X 2n chessboard, if the knight is placed anywhere.at n=22A180319
- Number of partitions of n such that the number of parts and the smallest part are coprime.at n=31A200928
- a(n) = prime(n)^3 mod (n^2 + prime(n)^2).at n=29A243769
- Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=1A257419
- Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=1A257420