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Properties of the Number 20746

Twenty Thousand Seven Hundred Forty-Six

Basics

Value: 20745 → 20746 → 20747

Parity: even

Prime: No

Previous Prime: 20743

Next Prime: 20747

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 11 × 23 × 41

Divisors: 1, 2, 11, 22, 23, 41, 46, 82, 253, 451

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000100001010

Octal: 50412

Duodecimal: 1000A

Hexadecimal: 510a

Square: 430396516

Square Root: 144.03471803700663

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 3k - 2 is prime. A14224
T(n,k) is the number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors. A208466
Multiplicative encoding of triangle formed by reading Pascal's triangle mod 2 (A047999). A123098
Number of partitions of n into at least two parts such that the product of largest and smallest part does not exceed n. A116901
a(n) = 12167n - 3588. A156846
Fifth column of (1,5)-Pascal triangle A096940. A96942
Number of partitions p of n such that mean(p) > multiplicity(max(p)). A240202
Under the isomorphism defined in A329329, of polynomials in GF(2)[x,y] to positive integers, a(n) is the image of the polynomial that results when x+1 is substituted for·in the polynomial with image n. A334205
McKay-Thompson series of class 14C for Monster. A58504
McKay-Thompson series of class 14C for the Monster group with a(0) = 4. A128516