17428
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 30506
- Proper Divisor Sum (Aliquot Sum)
- 13078
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 8712
- Möbius Function
- 0
- Radical
- 8714
- 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
- 48
- 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
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 66.at n=3A031744
- Numbers whose set of base-16 digits is {1,4}.at n=27A032828
- Base-8 palindromes that start with 4.at n=34A043024
- Numbers whose base-4 representation contains exactly four 0's and four 1's.at n=12A045037
- Number of unlabeled 2-ary cacti having n polygons. Also number of bicolored plane trees with n edges.at n=12A054357
- Numbers n such that x^n + x^13 + 1 is irreducible over GF(2).at n=17A057483
- Greatest number m such that the fractional part of (1024/1000)^A153677(n) <= 1/m.at n=10A153681
- a(n) = 16*n^2 + 4.at n=32A158444
- Least k > 0 such that 1 + n^2 and 1 + (n+k)^2 have the same smallest prime factor.at n=65A217448
- Number of aperiodic multisets of compositions of total weight n.at n=11A303551
- Numbers that are the sum of eight fourth powers in eight or more ways.at n=16A345583
- Numbers that are the sum of eight fourth powers in exactly eight ways.at n=13A345840
- a(n) = sum for all integer partitions of n of the number of distinct multiplicities in each partition.at n=30A373271