Properties of the Number 77978

Seventy-Seven Thousand Nine Hundred Seventy-Eight

Basics

Value: 77977 → 77978 → 77979

Parity: even

Prime: No

Previous Prime: 77977

Next Prime: 77983

Digit Sum: 38

Digital Root: 2

Palindrome: No

Factorization: 2 × 127 × 307

Divisors: 1, 2, 127, 254, 307, 614, 38989, 77978

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011000010011010

Octal: 230232

Duodecimal: 39162

Hexadecimal: 1309a

Square: 6080568484

Square Root: 279.24541177967455

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

T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order. A222794

Number of different (by numeric value, not by structure) expressions, consisting of N symbols, each of them is one of: nullary 1, unary sqrt(), binary +. A158415

Number of nX5 0..3 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order. A222791

Number of 4 X n 0..3 arrays with exactly floor(4 X n/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order. A222797

Expansion of 1/(1+x+2·x²-x³). A77978

The numbers formed by removing the required digits to form the number from a set of digits which is initially empty and that has digits added via the addition of numbers which cannot be created from the digits currently in the set. Start by trying to create the number 0. A331276