Properties of the Number -831402

Eight Hundred Thirty-One Thousand Four Hundred Two

Basics

Value: -831403 → -831402 → -831401

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 11 × 13 × 17 × 19

Divisors: 1, 2, 3, 6, 9, 11, 13, 17, 18, 19

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

375 Try Today's Challenge

Representations

Binary: -11001010111110101010

Octal: -3127652

Duodecimal: -341176

Hexadecimal: -cafaa

Square: 691229285604

Square Root: 911.8124807217765

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

Expansion of x / Series_Reversion(x·sqrt(1 + 4·x)). A224884

a(n) = (2n+3)!/(n!*(n+2)!). A917

Triangle T(n,k) = lcm(1,...,2·n+2)/((k+1)*binomial(2·k+2,k+1)). A120101

Number of valleys in all left factors of Dyck paths of length n. A valley is a (1,-1)-step followed by a (1,1)-step. A191522

Irregular triangle T giving the coefficients of xⁿ = x^{2·e2 + 3·e3} of (1 + x² + x³)ⁿ, with the pair of nonnegative numbers [e2, e3] listed in row n of A321201, for n >= 2. A321203

Ninth column (m=8) of (1,3)-Pascal triangle A095660. A95664

Expand the real root of y³ - y + x in powers of x, then multiply coefficient of xⁿ by -4ⁿ to get integers. A206300

Expansion of (∑_k>=0 x^k⁴)¹⁹. A282288

Least k such that ∑_i=1..n kⁱ / i is a positive integer. A333072

Number of Dyck paths of semilength n such that each positive level has exactly ten peaks. A288326