8250
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 32
- Divisor Sum
- 22464
- Proper Divisor Sum (Aliquot Sum)
- 14214
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2000
- Möbius Function
- 0
- Radical
- 330
- Omega Function (Ω)
- 6
- Little Omega Function (ω)
- 4
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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 39
- 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
- Degrees of irreducible representations of McLaughlin group McL.at n=18A003909
- Degrees of irreducible representations of McLaughlin group McL.at n=17A003909
- Non-seed mu-atoms of period n in Mandelbrot set.at n=38A006875
- Numbers k such that phi(k) | sigma_10(k).at n=15A015768
- s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = A001950 (upper Wythoff sequence).at n=25A025114
- Numbers that, when expressed in base 5 and then interpreted in base 10, yield a multiple of the original number.at n=44A032543
- Numbers whose base-4 representation contains exactly three 0's and three 2's.at n=35A045055
- Internal digits of n^2 include digits of n as subsequence.at n=30A046834
- Sum{T(i,n-i): i=0,1,...,n}, array T as in A047120.at n=14A047121
- A convolution triangle of numbers obtained from A025750.at n=11A049223
- a(n) = Sum_{i=0..n} T(i,n-i), array T as in A049747.at n=29A049748
- Numbers k such that k^6 == 1 (mod 7^4).at n=19A056092
- Numbers k such that tau(k) = sigma(sopf(k)).at n=40A075867
- Positions of check bits in code in A075934.at n=40A075936
- Triangle read by rows: differences of Narayana numbers.at n=52A093127
- Square array T(n,k), read by antidiagonals: number of labeled trees, with increments of labels along edges constrained to +-1, with n nodes that have no label greater than k.at n=51A101477
- a(n)=a(n-1)+sum of digits(a(n-1))*sum of digits(a(n-2)).at n=33A108720
- Numbers that have exactly six prime factors counted with multiplicity (A046306) whose digit reversal is different and also has 6 prime factors (with multiplicity).at n=13A109026
- Numbers m such that the numerator of the Bernoulli number B(m) is divisible by a cube.at n=27A122270
- Integer part of Gauss's Arithmetic-Geometric Mean M(1,n^4).at n=15A127760