Properties of the Number -788

Seven Hundred Eighty-Eight

Basics

Value: -789 → -788 → -787

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 197

Divisors: 1, 2, 4, 197, 394, 788

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: -1100010100

Octal: -1424

Duodecimal: -558

Hexadecimal: -314

Square: 620944

Square Root: 28.071337695236398

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

G.f. satisfies: A(x) = 1/(1 + x·A(x⁶)) and also the continued fraction: 1+x·A(x⁷) = [1;1/x,1/x⁶,1/x³⁶,1/x²¹⁶,...,1/x^{6^(n-1}),...]. A101916

Choose smallest m>0 such that the n-th rational prime p ramifies in the imaginary quadratic extension field K = Q(sqrt(-m)); a(n) = discriminant(K). A220861

G.f.: exp( ∑_n>=1 A002129(n²)*xⁿ/n ), where A002129(n) is the excess of sum of odd divisors of n over sum of even divisors of n. A225925

G.f.: Re((2·i; x)_inf), where (a; q)_inf is the q-Pochhammer symbol, i = sqrt(-1). A292135

Expansion of g.f.: sqrt(1+6·x+x²). A109771

McKay-Thompson series of class 30a for Monster. A58619

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 603", based on the 5-celled von Neumann neighborhood. A273174

Number of compositions of n into parts with distinct multiplicities. A242882

Positive integers which apparently never result in a palindrome under repeated applications of the function A056964(x) = x + (x with digits reversed). A23108

Numbers k such that the k-th composition in standard order is a permutation (of an initial interval). A333218