Properties of the Number 77028

Seventy-Seven Thousand Twenty-Eight

Basics

Value: 77027 → 77028 → 77029

Parity: even

Prime: No

Previous Prime: 77023

Next Prime: 77029

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 7 ² × 131

Divisors: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010110011100100

Octal: 226344

Duodecimal: 386B0

Hexadecimal: 12ce4

Square: 5933312784

Square Root: 277.53918642238614

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

Cyclops triangular numbers. A160717

a(n) = larger member of n-th pair of distinct, positive, triangular numbers whose sum and difference are also triangular numbers. A185128

Number of 3 X 3 integer matrices with elements in the range [ -n,n ] which represent a six-fold rotation. Also the sequence for the corresponding six-fold rotoinversions. A53174

Triangular numbers for which the number of divisors is also a triangular number. A116541

a(n) = n²*(2·n² + (-1)ⁿ). A275496

Number of 4-cycles in the n-triangular honeycomb queen graph. A289705

Numbers k such that 2·6^k + 1 is prime. A120023

The rascal triangle, read by rows: T(n,k) (n >= 0, 0 <= k <= n) = k(n-k) + 1. A77028

Number of nX4 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, diagonally or antidiagonally, and no adjacent values equal. A232372