Properties of the Number 20246

Twenty Thousand Two Hundred Forty-Six

Basics

Value: 20245 → 20246 → 20247

Parity: even

Prime: No

Previous Prime: 20233

Next Prime: 20249

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 53 × 191

Divisors: 1, 2, 53, 106, 191, 382, 10123, 20246

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111100010110

Octal: 47426

Duodecimal: B872

Hexadecimal: 4f16

Square: 409900516

Square Root: 142.2884394460773

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) = 0 + 1·2 + 3·4*5 + 6·7*8·9 + ... + ...*n. A227365

Number of partitions of n such that the number of parts having multiplicity 1 is a part and the number of distinct parts is not a part. A241444

Numbers k for which R(k) + 3·10^floor(k/2) is prime, where R(k) = (10^k-1)/9 (repunit: A002275). A331866

Number of distinct characteristic polynomials for 2 X 2 matrices with entries from {0, 1, ..., n}. A366448

a(n) is the number of distinct radii of circles passing through at least three points in a square grid of n X n points. A357301

Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302417

Number of walks within N² (the first quadrant of Z²) starting and ending at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 1), (0, 1), (1, 0)}. A151339

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302415

Strong pseudoprimes to base 20. A20246