8304
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 20
- Divisor Sum
- 21576
- Proper Divisor Sum (Aliquot Sum)
- 13272
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2752
- Möbius Function
- 0
- Radical
- 1038
- Omega Function (Ω)
- 6
- 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
- 65
- 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
- yes
- Odd
- no
Appears in sequences
- Shifts 2 places left when convolved with itself.at n=15A007477
- Expansion of e.g.f. sinh(sinh(x) + log(x+1)).at n=7A013019
- A051851(n)/row_index_of(n).at n=62A051852
- McKay-Thompson series of class 10c for Monster.at n=50A058204
- Prime(n^2) +/- n are primes.at n=32A064495
- Numbers m such that pi(m^2) is a square.at n=5A064523
- Sum of the first n Sophie Germain primes.at n=30A066819
- Seventh convolution of A002605(n) (generalized (2,2)-Fibonacci), n >= 0, with itself.at n=4A073394
- Expansion of a Schwarzian ({f_{32|8}, tau} / (4*Pi)^2) in powers of q^8.at n=2A092924
- Numbers k such that 4^k + 2^k - 1 is prime.at n=23A098855
- Sum of the sides of ordered 2 X 2 prime squares.at n=43A105088
- Number of subsets of the n-th roots of unity summing to a real number.at n=17A107848
- Triangle read by rows: CP(n,i) for n>=0 and 3n+1 >= i >= 0, gives the absolute value of the coefficients of the chromatic polynomial of C_3 X P_(n+1) factored in the form x(x-1)^i.at n=36A123531
- Number of base 28 n-digit numbers with adjacent digits differing by three or less.at n=4A126496
- A triangle of coefficients of a product polynomial sequence based on Chebyshev T:differentiation of T[(x,n) which gives U(x,n): p(x,n) = Product_{m=0..n} Sum_{i=0..m} (d/dx) T(x,i+1).at n=18A139809
- Ulam's spiral (ESE spoke).at n=23A143855
- 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, -1, 1), (-1, 0, 1), (-1, 1, 1), (0, 1, 1), (1, 0, -1)}.at n=9A148455
- a(n) = 361*n + 1.at n=22A158310
- Number of binary strings of length n with equal numbers of 00001 and 11010 substrings.at n=14A164209
- Numbers k such that k^3 +-5 are primes.at n=35A176684