Properties of the Number 97840

Ninety-Seven Thousand Eight Hundred Forty

Basics

Value: 97839 → 97840 → 97841

Parity: even

Prime: No

Previous Prime: 97829

Next Prime: 97841

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 5 × 1223

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10111111000110000

Octal: 277060

Duodecimal: 48754

Hexadecimal: 17e30

Square: 9572665600

Square Root: 312.79386183235755

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

Numbers k such that k+1, k+3, k+7 and k+9 are all primes. A125855

Irregular table read by rows: Take a diagonal-edged (or diamond-shaped) checkerboard with all diagonals drawn, as in A333434. Then T(n,k) = number of k-sided polygons in that figure for k >= 3. A333458

Positions of powerful terms among the numbers satisfying Euler's condition for odd perfect numbers (A228058). A388279

a(n) is least k such that k and 10k are anagrams in base n (written in base 10). A23102

a(n) = ∑_k=0..n binomial(2·k,k)/(k+1)*binomial(2·n-1,n-k). A279013

Chebyshev polynomials S(n,83) + S(n-1,83) with Diophantine property. A97840