15294
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 30600
- Proper Divisor Sum (Aliquot Sum)
- 15306
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 5096
- Möbius Function
- -1
- Radical
- 15294
- 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
- 177
- 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 6-ary rooted trees with n nodes and height exactly 8.at n=15A036646
- Numerators of continued fraction convergents to sqrt(39).at n=4A041064
- Numbers whose base-4 representation contains exactly three 2's and four 3's.at n=21A045152
- Indices k such that A019326(k)=Phi[k](8) is prime, where Phi is a cyclotomic polynomial.at n=30A138938
- a(n)=7*a(n-1)+a(n-2), n>2 ; a(0)=1, a(1)=6, a(2)=42 .at n=5A155196
- Number of 4-step E, S, NW and NE-moving king's tours on an n X n board summed over all starting positions.at n=17A187587
- Number of subsets of {1..n} (including empty set) such that the pairwise GCDs of elements are not distinct.at n=27A196720
- Periods associated with A217611.at n=33A217646
- Number of n-isohedral edge-to-edge colorings of regular polygons.at n=4A269630
- Minimum value of the cyclic autocorrelation of first n primes.at n=19A299053
- Number of partitions of n with rank 4 (the rank of a partition is the largest part minus the number of parts).at n=53A363213