Properties of the Number 71902

Seventy-One Thousand Nine Hundred Two

Basics

Value: 71901 → 71902 → 71903

Parity: even

Prime: No

Previous Prime: 71899

Next Prime: 71909

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 35951

Divisors: 1, 2, 35951, 71902

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001100011011110

Octal: 214336

Duodecimal: 3573A

Hexadecimal: 118de

Square: 5169897604

Square Root: 268.14548290060753

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-x)/(1-x-2·x³). A52537

Constant term in the reduction of the polynomial (x² + 2)ⁿ by x³ -> x² + 2. See Comments. A192808

Consider the 2ⁿ⁺¹ polynomials f(x) with coefficients 0 or 1 and degree <= n. Sequence gives triangle read by rows, in which T(n,k) (n>=0) is the number of such polynomials of thickness k (0 <= k <= n+1). A169945

∑_k=0..n² (k² - n²)/n. A71902