Properties of the Number 91880

Ninety-One Thousand Eight Hundred Eighty

Basics

Value: 91879 → 91880 → 91881

Parity: even

Prime: No

Previous Prime: 91873

Next Prime: 91909

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 5 × 2297

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 2297, 4594

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10110011011101000

Octal: 263350

Duodecimal: 45208

Hexadecimal: 166e8

Square: 8441934400

Square Root: 303.1171390733292

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

Index of first occurrence of n-th prime in A307720. A307632

Triangle T(n, k) = coefficients of ( t(n, x) ) where t(n, x) = (1-x)ⁿ⁺¹*p(n, x)/x, p(n, x) = x·D( p(n-1, x) ), with p(1, x) = x/(1-x)², p(2, x) = x*(1+x)/(1-x)³, and p(3, x) = x*(1+10·x+x²)/(1-x)⁴, read by rows. A166341

Indices of record high-points in A307720. A307631

Number of compositions of n such that two adjacent parts are not equal modulo 4. A62202

Triangle read by rows: T(n,k) appears in the transformation ∑_k=0..n (k+1)*x^k = ∑_k=0..n T(n,k)*(x-2k)^k. A253382

Number of binary strings of length n with equal numbers of 00101 and 01011 substrings. A164246

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 901", based on the 5-celled von Neumann neighborhood. A273744

A049232 indexed by A000040. A91880