8888
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 32
- Digital Root
- 5
- Palindromic Number
- yes
- Repdigit
- yes
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 18360
- Proper Divisor Sum (Aliquot Sum)
- 9472
- 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
- 4000
- Möbius Function
- 0
- Radical
- 2222
- Omega Function (Ω)
- 5
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 34
- 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
- Strobogrammatic numbers: the same upside down.at n=32A000787
- Trajectory of 1 under map x->x + (x-with-digits-reversed).at n=11A001127
- Number of 5-line partitions of n.at n=16A001452
- a(n) = 8*(10^n - 1)/9.at n=4A002282
- Numbers with mirror symmetry about middle.at n=16A006072
- a(n) = Sum_{k=1..n-1} lcm(k,n-k).at n=44A006580
- Repdigit numbers, or numbers whose digits are all equal.at n=35A010785
- Numbers > 9 with all digits the same.at n=25A014181
- Number of partitions of n that do not contain 10 as a part.at n=33A027344
- Repdigit - 1 is prime.at n=8A028987
- Numbers whose maximal base-10 run length is 4.at n=7A033285
- Trajectory of 25 under map x->x + (x-with-digits-reversed).at n=7A033658
- Trajectory of 59 under map x->x + (x-with-digits-reversed).at n=6A033671
- Cubeful (i.e., not cubefree) palindromes.at n=28A035133
- Molien series for 3-D group X1.at n=20A037240
- Smallest positive number that needs more lines when shown on a 7-segment display (digital clock) than any previous term.at n=23A038619
- Palindromic Fibonacci-lucky numbers.at n=42A039674
- Base 10 palindromes that start with 8.at n=20A043043
- Numbers having four 8's in base 10.at n=0A043524
- Palindromic and divisible by 4.at n=44A045639