15270
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 36720
- Proper Divisor Sum (Aliquot Sum)
- 21450
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4064
- Möbius Function
- 1
- Radical
- 15270
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- yes
- Harshad Number
- yes
- Narcissistic Number
- no
- Collatz Steps
- 84
- 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
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite VNI = VPI-9 Rb44K4[Zn24Si96O240].48H2O starting with a T6 atom.at n=13A019254
- a(n) = a(n-1) + a(n-2) + 1, with a(0)=3, a(1)=12.at n=16A022411
- Expansion of 1/((1-5x)(1-9x)(1-10x)(1-12x)).at n=3A028197
- Numbers k such that 229*2^k+1 is prime.at n=13A032491
- Number of paths from (0,0) to (n+2,n) using only up and right steps and avoiding two or more consecutive moves up or three or more consecutive moves right.at n=44A177787
- Wiener index of the n-sunlet graph.at n=27A180574
- Potential magic constants of a 10 X 10 magic square composed of consecutive primes.at n=19A192087
- Numbers k such that k is the average of four consecutive primes k-7, k-1, k+1 and k+7.at n=20A258879
- Numbers m with m-1, m+1 and prime(m)+2 all prime.at n=31A259539
- Number of ways to write n as an ordered sum of 6 primes (counting 1 as a prime).at n=37A341985
- Products of four distinct primes between twin primes.at n=40A353022