12370
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 22284
- Proper Divisor Sum (Aliquot Sum)
- 9914
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4944
- Möbius Function
- -1
- Radical
- 12370
- Omega Function (Ω)
- 3
- 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
- 94
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- 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
- Number of asymmetrical planar partitions of n: planar partitions (A000219) that when regarded as 3-D objects have no symmetry.at n=19A000785
- Numbers k such that the continued fraction for sqrt(k) has period 39.at n=22A020378
- Values of A038007 not ending in 6 or 8.at n=22A038009
- Numerators of continued fraction convergents to sqrt(586).at n=8A042122
- Least k such that k*10^n+1, k*10^n+3, k*10^n+7 and k*10^n+9 are all prime.at n=12A064281
- Rank of 2^n when all prime powers (A246655) p^n, for n>=1, are jointly ranked.at n=16A182908
- Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=17A192968
- Number of partitions of n in which any two parts differ by at most 8.at n=39A218510
- a(n) = (3*2^(n+2) + n*(n+5))/2 - 6.at n=11A239745
- Nonprimes such that it takes exactly 4 iterations of reverse-and-add digits to generate a prime.at n=24A245209
- Smallest number k such that A270172(k) = n.at n=33A270173
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 149", based on the 5-celled von Neumann neighborhood.at n=25A270319
- Number of ordered rooted trees with 2n non-root nodes such that the maximal outdegree equals n.at n=6A291662
- Number of ordered rooted trees with n non-root nodes such that the maximal outdegree equals ceiling(n/2).at n=12A303259
- Sum of the smallest parts in the partitions of n into 8 parts.at n=47A308990
- Sum of the seventh largest parts in the partitions of n into 10 parts.at n=43A326592
- a(n) = Sum_{i=1..n, j=1..n, gcd(i,j)=1} i.at n=33A333297
- a(n) is the number of edges formed by n-secting the angles of a decagon.at n=23A335802
- Number of palindromes < 10^n whose squares are also palindromes.at n=37A343098
- Sorted positions of first appearances in A057820, the sequence of first differences of prime-powers.at n=41A376340