Properties of the Number 84820

Eighty-Four Thousand Eight Hundred Twenty

Basics

Value: 84819 → 84820 → 84821

Parity: even

Prime: No

Previous Prime: 84811

Next Prime: 84827

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 5 × 4241

Divisors: 1, 2, 4, 5, 10, 20, 4241, 8482, 16964, 21205

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10100101101010100

Octal: 245524

Duodecimal: 41104

Hexadecimal: 14b54

Square: 7194432400

Square Root: 291.2387336876742

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

Number of 4-ary Lyndon words of length n over Z₄ with trace 2 and subtrace 0. A74410

4·a(n) is the maximum possible determinant of a 3 X 3 matrix whose entries are 9 consecutive primes starting with prime(n). A340923

Number of nX3 nonnegative integer arrays with upper left 0 and lower right n+3-4 and value increasing by 0 or 1 with every step right or down. A252871

Numbers n such that n, σ(n) and φ(n) form an integer triangle, where σ=A000203 is the divisor sum and φ=A000010 the totient. A84820