10495
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 12600
- Proper Divisor Sum (Aliquot Sum)
- 2105
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 8392
- Möbius Function
- 1
- Radical
- 10495
- Omega Function (Ω)
- 2
- 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
- 86
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has period 80.at n=34A020419
- Number of partitions of n into parts not of the form 9k, 9k+2 or 9k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 3 are greater than 1.at n=45A035941
- Numbers k such that prime(k+2)-(k+2)*tau(k+2) = prime(k-2)-(k-2)*tau(k-2) where tau(k) = A000005(k) is the number of divisors of k.at n=36A067354
- a(n) = min{ m : sum_{n <= i <= m} 1/p_i > 1}, where p_i is the i-th prime = A000040(i).at n=18A092325
- A sequence of asymptotic density zeta(9) - 1, where zeta is the Riemann zeta function.at n=20A143035
- a(n) = 256*n - 1.at n=40A158250
- Number of nondecreasing sequences of 3 1..n integers with no element dividing the sequence sum.at n=42A212870
- a(n) = (A216363(n) - 1)/118.at n=21A216380
- Semiprimes which have one or more occurrences of exactly five different digits.at n=27A235693
- Five-digit odd semiprimes with all digits distinct.at n=20A247948
- Numbers n such that A062234(n) = A062234(n+1) = A062234(n+2).at n=42A258449
- Numbers n such that the digital sum of n is the same as the digital sum of n^2 in both base 2 and base 10.at n=16A261640
- Partial sums of A304050.at n=42A304075
- Number of integer partitions of n whose run-lengths are not unimodal.at n=39A332281
- Expansion of 1 / (1 + Sum_{k>=1}(-x)^Lucas(k)).at n=33A357384