15058
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
- 22590
- Proper Divisor Sum (Aliquot Sum)
- 7532
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7528
- Möbius Function
- 1
- Radical
- 15058
- 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
- 63
- 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
- yes
- Odd
- no
Appears in sequences
- Numbers k such that 85*2^k+1 is prime.at n=19A032392
- Number of unordered pairs of partitions of n (into distinct parts) with empty intersection.at n=31A108796
- Numbers k such that binomial(4k, k) - 1 is prime.at n=16A125240
- a(n) = F(2n+1)^3 - F(3n)^2 - F(6n-2), where the F(i) are Fibonacci numbers.at n=4A171681
- Number of n X 2 nonnegative integer arrays with upper left 0 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.at n=19A252932
- Numbers k such that k!6 + 3 is prime, where k!6 is the sextuple factorial number (A085158 ).at n=21A287844
- Expansion of 1/(1 - Sum_{i>=1, j>=1, k>=1} x^(i*j*k)).at n=10A304963
- Number of symmetric unrooted self-avoiding walks of n steps on hexagonal lattice.at n=13A306176