Properties of the Number 83220

Eighty-Three Thousand Two Hundred Twenty

Basics

Value: 83219 → 83220 → 83221

Parity: even

Prime: No

Previous Prime: 83219

Next Prime: 83221

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 19 × 73

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 19

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10100010100010100

Octal: 242424

Duodecimal: 401B0

Hexadecimal: 14514

Square: 6925568400

Square Root: 288.47876871617433

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

Complement of A340745. A340824

a(n) is a non-palindromic composite located between twin primes whose reverse, which is less than it, is also located between twin primes. A103741

Number of subsets of {1,2,...,n} whose sum is semiprime (cf. A001358, A064911). A181522

Numbers k such that (k-1, k+1) and (k/2-1, k/2+1) are both pairs of twin primes. A76504

Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0. A33131

Triangular array read by rows: T(n,k) (2 <= k <= n) is the smallest number whose representations in bases n and k both consist of repeated identical blocks of digits. A317168

a(n) = n + (n mod 4). A83220