16250
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 20
- Divisor Sum
- 32802
- Proper Divisor Sum (Aliquot Sum)
- 16552
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6000
- Möbius Function
- 0
- Radical
- 130
- 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
- 66
- 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
- a(n) = n^2*(n+1).at n=25A011379
- Numbers that are the sum of 2 nonzero squares in exactly 5 ways.at n=4A025288
- Numbers that are the sum of 2 nonzero squares in 5 or more ways.at n=12A025296
- Numbers that are the sum of 2 distinct nonzero squares in exactly 5 ways.at n=2A025306
- Numbers that are the sum of 2 distinct nonzero squares in 5 or more ways.at n=10A025315
- Number of partitions of n with equal number of parts congruent to each of 0 and 3 (mod 4).at n=45A035542
- Sums of two distinct powers of 5.at n=19A038474
- Numbers k that divide 9^k + 7^k.at n=17A045605
- Sums of two powers of 5.at n=25A055237
- Numbers k such that the sum over the prime divisors of k equals the number of divisors of k.at n=41A069234
- Denominators of coefficients in Airy-type asymptotic expansion.at n=3A069243
- Numbers k such that S(k)=d(k), where S(k) is the Kempner function (A002034) and d(k) is the number of divisors of k (A000005).at n=16A073307
- Numbers n such that number of divisors of n divides S(n), the Kempner function A002034.at n=27A073413
- Numbers n such that the sum of the digits of the n-th Fibonacci number written in bases 2, 3, 5 and 7 is prime.at n=28A111064
- a(0) = a(1) = 1, a(2) = x, a(3) = 2x^2, a(n) = x*(n-1)*a(n-1) + Sum_{j=2..n-2} (j-1)*a(j)*a(n-j), n>=4 and for x = 5.at n=5A113132
- Product of the first n 3-almost primes, divided by product of the first n primes, rounded down.at n=10A122032
- Number of reduced words of length n in Coxeter group on 26 generators S_i with relations (S_i)^2 = (S_i S_j)^4 = I.at n=3A163177
- Number of reduced words of length n in Coxeter group on 26 generators S_i with relations (S_i)^2 = (S_i S_j)^5 = I.at n=3A163526
- Number of reduced words of length n in Coxeter group on 26 generators S_i with relations (S_i)^2 = (S_i S_j)^6 = I.at n=3A163995
- Number of reduced words of length n in Coxeter group on 26 generators S_i with relations (S_i)^2 = (S_i S_j)^7 = I.at n=3A164639