Properties of the Number -20777

Twenty Thousand Seven Hundred Seventy-Seven

Basics

Value: -20778 → -20777 → -20776

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 79 × 263

Divisors: 1, 79, 263, 20777

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000100101001

Octal: -50451

Duodecimal: -10035

Hexadecimal: -5129

Square: 431683729

Square Root: 144.14229081015745

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

Number of integer partitions of n with a unique non-co-mode. A363129

Numerator of Integral_x=0..1 ∏_k=1..n (1-x^k) dx. A258229

Numbers m such that Stern polynomial B(m,x) has no irreducible polynomial factors that themselves are Stern polynomials. The initial a(1) = 1 is included by convention. A389918

a(n) = n·3^n-1 + (3ⁿ + 1)/2. A86972

Rectangular array A read by upward antidiagonals in which the entry in row n and column k is defined by A(n,k) = 5 + 9·A005836(2^{k - 1}*(2 n - 1)), n,k >= 1. A265159

0-additive sequence: a(n) is the smallest number larger than a(n-1) that is not the sum of any subset of earlier terms, starting with initial values {2, 5}. A244749

Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. A316619

Number of (3412,1234)-avoiding involutions in S_n. A85583

Number of nXn 0..1 arrays with every element unequal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. A316616