10774
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
- 16164
- Proper Divisor Sum (Aliquot Sum)
- 5390
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5386
- Möbius Function
- 1
- Radical
- 10774
- 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
- 148
- 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
- Number of isolated-pentagon (IPR) fullerenes with 2n vertices (or carbon atoms).at n=30A046880
- Row 5 of square array defined in A047671.at n=7A047674
- a(n) = (117*n^2 - 99*n + 2)/2.at n=14A050408
- Conjectured numbers n such that the trajectory of n as defined in A003508 is unique.at n=41A105233
- Numbers n such that p(9n) is prime, where p(n) is the number of partitions of n.at n=19A114169
- Number of permutations of length n which avoid the patterns 231, 1423, 3214.at n=15A116717
- a(0)=1; a(1)=2; a(2)=6; a(n+1) = 2*(n+1)*a(n) - n^2*a(n-1), n > 1.at n=6A156626
- Number of binary strings of length n with equal numbers of 00000 and 00010 substrings.at n=14A164179
- a(n) = Sum_{d|n} A007955(d) * A000027(d) = Sum_{d|n} A007955(d) * (d), where A007955(m) = product of divisors of m.at n=21A174933
- a(n) is the least integer such that the iterated modulus chain m_1=mod(a(n),m),m_2=mod(a(n),m_1),m_3=mod(a(n),m_2),..., m_n= (0 or 1) reaches a length n. The companion value m, associated to a(n), is given in A177968.at n=24A177967
- Numbers k such that the periodic part of the continued fraction of sqrt(k) has more ones than any smaller k.at n=26A206579
- Total number of maximal cyclic subgroups of the symmetric group, counting conjugates as distinct.at n=8A218958
- Li estimate of the number of primes in successive power of two intervals [2^i, 2^(i+1)) for i >= 1.at n=16A223900
- Volume of elliptic cone (rounded down) with semi-minor axis = height = n and semi-major axis = 3*n/2.at n=18A228391
- a(n) = A291937(3^n).at n=4A292184
- Composite numbers k such that phi(x) = psi(k)*phi(k) has no solution.at n=4A292714
- Number of primes < 10^n with exactly one odd decimal digit.at n=6A359813
- Semiprimes k such that none of k-2, k-1, k+1, and k+2 is squarefree.at n=34A364010
- Composite numbers c satisfying the congruence c * sigma_k(c) == 2 (mod phi(c)) that are "flanked" by 14 at k-1 and k+1.at n=44A392308