11495
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 15960
- Proper Divisor Sum (Aliquot Sum)
- 4465
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7920
- Möbius Function
- 0
- Radical
- 1045
- Omega Function (Ω)
- 4
- 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
- 86
- 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
- Coefficient of x^4 in (1-x-x^2)^(-n).at n=18A006504
- Number of partitions of n into parts of 19 kinds.at n=4A023017
- Positive numbers whose product of digits is 9 times their sum.at n=30A062041
- Structured heptagonal anti-diamond numbers (vertex structure 7).at n=14A100186
- Integers that are Rhonda numbers to more than one base.at n=19A100988
- Ceiling(4/3*Pi*n^3).at n=14A135973
- 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, 0, 1), (-1, 1, 1), (0, 1, 0), (1, -1, 0), (1, 1, -1)}.at n=9A148367
- Coefficient triangle sequence of characteristic polynomials of a Fermat like matrix:M(n)=Pascal n-th matrix: F(n)=Inverse[Transpose[M(n)]].M(n).at n=59A168228
- Coefficient triangle sequence of characteristic polynomials of a Fermat like matrix:M(n)=Pascal n-th matrix: F(n)=Inverse[Transpose[M(n)]].M(n).at n=61A168228
- Triangle T(n,k)= binomial(n + k,n) + binomial(2*n-k,n) read by rows.at n=47A171824
- Triangle T(n,k)= binomial(n + k,n) + binomial(2*n-k,n) read by rows.at n=52A171824
- Molecular topological indices of the gear graphs.at n=18A192827
- Numbers that can be written in more than 1 way as p^2 + 3pq + q^2 with primes p < q.at n=8A218795
- Smallest k such that k*2*p(n)^2+1=q is prime 2*k*q^2+1=r 2*k*r^2+1=s, r and s are also prime.at n=19A224495
- Number of palindromic Carlitz compositions of n.at n=35A239327
- Numbers m such that there are precisely 7 groups of order m.at n=38A249550
- Integers that are Rhonda numbers to base 30.at n=13A255736
- Positive integers whose square is the sum of 33 consecutive squares.at n=7A257767
- Expansion of Product_{n>=1} (1 - x^(5*n))^18/(1 - x^n)^19 in powers of x.at n=4A278556
- Numbers n such that psi(n) = 2*phi(n).at n=19A292390