15341
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 16590
- Proper Divisor Sum (Aliquot Sum)
- 1249
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 14168
- Möbius Function
- 0
- Radical
- 667
- 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
- 133
- 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
- Products p^3 or p^2*q, where {p,q} are consecutive primes.at n=25A033477
- Numerator of Sum_{k=0..n} 1/binomial(n,k).at n=12A046825
- Numerator of (1/n)*Sum_{k=0..n-1} 1/binomial(n-1,k) for n>0 else 0.at n=13A046878
- a(1)=1, a(n)=a(n-a(1))+a(n-a(2))+a(n-a(3))+....a(n-a(n-1)) for n>1, with convention that a(i)=0 for i<=0.at n=12A052109
- Numbers k such that 4*10^k - 11 is prime.at n=16A102738
- Number of partitions that are "2-close" to being self-conjugate.at n=49A108961
- Number of intersections of at least four edges in a cube of n X n X n smaller cubes.at n=23A126562
- Numbers having exactly two distinct prime factors p, q with q = p+6.at n=36A143205
- Multiples of 23 whose digit reversal + 1 is also a multiple of 23.at n=25A166393
- Positive integers of the form (30*m^2+1)/11.at n=13A179339
- The number of unlabeled graphs on n nodes with degree of 1 or 2.at n=30A186417
- Numbers n such that sum of squares of digits of n equals the sum of prime divisors of n.at n=32A217390
- Minimum value unattainable as the sum of 3 attained values of a*b*c with a,b,c 0..n integers.at n=18A225265
- Numerators of b(n) = b(n-1)/2 + 1/(2*n), b(0)=0.at n=13A242376
- a(n) = 29*n^2.at n=23A244635
- Maximal non-semiprime number which is a "preprime" of the n-th kind (defined in comment in A247395).at n=21A247834
- a(n) = (p_n)^2 * p_{n+1}, where p_n is the n-th prime, A000040(n).at n=8A251720
- The number of days elapsed since the Gregorian (proleptic) date Sunday, December 31, 1 BC on 1/1/n, where 1/1/n is the Gregorian date in the format month/day/year, the New Year's Day of the year n.at n=42A350471
- Greatest positive integer whose weakly increasing prime indices have zero-based weighted sum (A359674) equal to n.at n=28A359757
- Square array A(n,k), read by descending antidiagonals, where A(1, k) = A388984(k), and for n > 1, A(n, k) = A003961(A(n-1), k).at n=44A388981