Properties of the Number 19170

Nineteen Thousand One Hundred Seventy

Basics

Value: 19169 → 19170 → 19171

Parity: even

Prime: No

Previous Prime: 19163

Next Prime: 19181

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 5 × 71

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 27

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101011100010

Octal: 45342

Duodecimal: B116

Hexadecimal: 4ae2

Square: 367488900

Square Root: 138.4557691105719

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numbers k such that k and k + 1 are both Niven numbers in base 3/2 (A342426). A342427

Numbers n that raised to the powers from 1 to k (with k>=1) are multiple of the sum of their digits (n raised to k+1 must not be a multiple). Case k=8. A135193

a(n) is the smallest number k larger than a(n-1) such that n·d(k)*sopf(k)=σ(k), where d is the number of divisors (A000005) and sopf the sum of prime factors without repetition (A008472). A134382

Numbers n for which there are exactly six k such that n = k + (product of nonzero digits of k). A96927

Numbers that are the sum of six fourth powers in exactly four ways. A345816

a(n) = (-1)ⁿ + (-2)ⁿ - (-3)ⁿ. A83321

a(1)=1, a(2)=2; for n >= 2, a(n+1) = a(n) + sum of prime factors of a(n). A96461

Number T(n,k) of self-inverse permutations p on [n] where the minimal transposition distance equals k (k=0 for the identity permutation); triangle T(n,k), n>=0, 0<=k<=n, read by rows. A239145

s(k)-s(j), where (s(k),s(j)) is the least pair of numbers given by s(j)=3^j-2^j which n divides their difference. A205110

Expansion of g.f. (3-4·x-sqrt(1-4·x²))/(2*(1-2·x)²). A182555