Properties of the Number 77420

Seventy-Seven Thousand Four Hundred Twenty

Basics

Value: 77419 → 77420 → 77421

Parity: even

Prime: No

Previous Prime: 77419

Next Prime: 77431

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 7 ² × 79

Divisors: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010111001101100

Octal: 227154

Duodecimal: 38978

Hexadecimal: 12e6c

Square: 5993856400

Square Root: 278.24449680092505

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

a(n) = 4*(n - 1)*(16·n - 23) for n >= 1. A304378

Bisection of Chebyshev sequence T(n,3) (odd part) with Diophantine property. A77420

G.f. A(x) satisfies 1/x = ∑_n=-oo..+oo A(x)^2·n * (A(x)ⁿ + 2)^2·n+1. A378572