16375
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
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 20592
- Proper Divisor Sum (Aliquot Sum)
- 4217
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 13000
- Möbius Function
- 0
- Radical
- 655
- Omega Function (Ω)
- 4
- 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
- 128
- 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
- no
- Odd
- yes
Appears in sequences
- a(n) = T(n,n+2), T given by A027052.at n=14A027053
- Sums of 3 distinct powers of 5.at n=29A038475
- Numerator of b(n) = binomial(2n,n)^3*(42n+5)/2^(12n+4).at n=3A069985
- Sums of members of groups in A076062.at n=31A076060
- Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=3, I={-1,0,2}.at n=36A080001
- Consider the family of multigraphs enriched by the species of partitions. Sequence gives the triangle read by rows giving coefficients of polynomials arising from enumeration of those multigraphs on n edges of 5 different colors.at n=14A098346
- Numbers n such that (sigma(n-2)+sigma(n+2))/2 = sigma(n).at n=35A099631
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (0, 0, -1), (0, 1, 1), (1, -1, 0)}.at n=9A148816
- Number of binary strings of length n with no substrings equal to 0000 0010 or 0101.at n=13A164418
- a(n) = 4*2^n - 9.at n=11A172252
- a(n) = 2^n - 9.at n=14A185346
- Monotonic ordering of nonnegative differences 2^i-9^j, for 40>=i>=0, j>=0.at n=39A192122
- Monotonic ordering of nonnegative differences 4^i-3^j, for 40>=i>=0, j>=0.at n=37A192148
- Monotonic ordering of nonnegative differences 4^i-9^j, for 40>= i>=0, j>=0.at n=21A192169
- Numbers in A206853 without proper divisors > 1 from the same sequence.at n=33A209630
- Number of hands of n points in Spanish dominoes.at n=15A258064
- Number of hands of n points in Spanish dominoes.at n=39A258064
- Maximum incarceration of numbers in an n X n X n number cubes with full incarceration volumes.at n=6A275359
- Numbers k such that (404*10^k - 53)/9 is prime.at n=17A295628
- a(n) = Sum_{k = ceiling(n/2)..n-1} A354169(k).at n=20A354757