Properties of the Number 98920

Ninety-Eight Thousand Nine Hundred Twenty

Basics

Value: 98919 → 98920 → 98921

Parity: even

Prime: No

Previous Prime: 98911

Next Prime: 98927

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 5 × 2473

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 2473, 4946

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000001001101000

Octal: 301150

Duodecimal: 492B4

Hexadecimal: 18268

Square: 9785166400

Square Root: 314.5155004129367

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) is the number of nonnegative integers k less than 10ⁿ such that the decimal representation of k lacks at least one of the digits 1,2,3,4 and at least one of the digits 5,6,7,8,9. A125904

a(n) = ((5 + 2·sqrt(2))*(4 + sqrt(2))ⁿ + (5 - 2·sqrt(2))*(4 - sqrt(2))ⁿ)/2. A163610

Number of 0..n arrays x(0..3) of 4 elements without any interior element greater than both neighbors or less than both neighbors. A200872

Partial sums of A100119. Sum of first n of the n-th centered n-gonal numbers. A130218

Least k such that k·M#(n) + 1 is prime where M#(n) is the product of the first n Mersenne primes = ∏_j=1..n A000668(j). A98920