Properties of the Number 19461

Nineteen Thousand Four Hundred Sixty-One

Basics

Value: 19460 → 19461 → 19462

Parity: odd

Prime: No

Previous Prime: 19457

Next Prime: 19463

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 13 × 499

Divisors: 1, 3, 13, 39, 499, 1497, 6487, 19461

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100110000000101

Octal: 46005

Duodecimal: B319

Hexadecimal: 4c05

Square: 378730521

Square Root: 139.5026881461429

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

a(n) = p² + p + 1 where p runs through the primes. A60800

A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to the ratios of 8 musical tones: 8/7 16/11 5/4 4/3 3/2 8/5 11/8 7/4. A60527

Number of strict compositions of n with no three consecutive parts in arithmetic progression. A325849

Antidiagonal sums of triangular array T: T(j,1) = 1 for ((j-1) mod 8) < 4, else 0; T(j,k) = T(j-1,k-1) + T(j,k-1) for 2 <= k <= j. A131077

a(n) = n*(2·n² + 5·n + 15)/2. A163673

Coefficient of·in the reduction by x²->x+1 of the polynomial p(n,x) defined below in Comments. A192759

Number of partitions of 2n into exactly n nonzero decimal palindromes. A319454

Indices of primes in sequence defined by A(0) = 77, A(n) = 10·A(n-1) - 43 for n > 0. A56257

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (0, 1, 0), (1, 1, 0), (1, 1, 1)}. A151170

Partial sums of primes in which no digit is a prime A061372. A172523