Properties of the Number 19488

Nineteen Thousand Four Hundred Eighty-Eight

Basics

Value: 19487 → 19488 → 19489

Parity: even

Prime: No

Previous Prime: 19483

Next Prime: 19489

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 ⁵ × 3 × 7 × 29

Divisors: 1, 2, 3, 4, 6, 7, 8, 12, 14, 16

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100110000100000

Octal: 46040

Duodecimal: B340

Hexadecimal: 4c20

Square: 379782144

Square Root: 139.59942693292118

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

Dowling numbers: e.g.f. exp(x + (exp(b·x)-1)/b) with b=8. A3580

Numbers k such that σ(x) = k has exactly 10 solutions. A60666

a(n) = n*(n+1)*(5·n + 4)/6. A162147

a(n) = prime(prime(prime(A028815(n) - 1) - 1) - 1) - 1. A141133

Numbers of the form p⁵*q·r*s where p, q, r, and s are distinct primes. A179704

T(n,k)=Number of (n+3)X(k+3) 0..1 arrays with every row and column least squares fitting to a positive slope straight line. A222784

Number of squares that divide 1!*2!*3!*...*n!. A248784

Numbers m such that m*(m-τ(m))/σ(m) is an integer h where k-τ(k) is the number of nondivisors of k (A049820) and σ(k) is the sum of the divisors of k (A000203). A325020

Numbers m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,61. A65698

Composite numbers k such that φ(k) divides σ(k) - 2·k. A68412