Properties of the Number 97821

Ninety-Seven Thousand Eight Hundred Twenty-One

Basics

Value: 97820 → 97821 → 97822

Parity: odd

Prime: No

Previous Prime: 97813

Next Prime: 97829

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 3623

Divisors: 1, 3, 9, 27, 3623, 10869, 32607, 97821

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10111111000011101

Octal: 277035

Duodecimal: 48739

Hexadecimal: 17e1d

Square: 9568948041

Square Root: 312.7634889177444

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 1/(1-x²-x³-x⁴-x⁵-x⁶-x⁷-x⁸). A13985

Expansion of (1-x²)/(1-3x+x²+3x³+x⁴). A101498

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a tee 1,1 1,2 1,3 2,2 in any orientation. A145928

Number of n X n binary arrays symmetric about the diagonal and under 90-degree rotation with all ones connected only in a tee 1,1 1,2 1,3 2,2 in any orientation. A145930

Expansion of e.g.f. exp(2x)/(1-5x). A97821