Properties of the Number 20002

Twenty Thousand Two

Basics

Value: 20001 → 20002 → 20003

Parity: even

Prime: No

Previous Prime: 19997

Next Prime: 20011

Digit Sum: 4

Digital Root: 4

Palindrome: Yes

Factorization: 2 × 73 × 137

Divisors: 1, 2, 73, 137, 146, 274, 10001, 20002

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100111000100010

Octal: 47042

Duodecimal: B6AA

Hexadecimal: 4e22

Square: 400080004

Square Root: 141.42842712835352

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

Numbers whose square is a palindrome. A2778

Palindromes in base 3 (written in base 3). A118594

Numbers whose decimal expansion contains only 0's and 2's. A169965

List the positions of all digits '1' in the sequence. This is the lexicographically earliest increasing sequence with this property. A98645

Indices of nontrivial zeros of Riemann ζ function whose imaginary part sets a record for the absolute minimal difference from an integer. A255739

Palindromes whose square is a palindrome; also palindromes whose sum of squares of digits is less than 10. A57135

Numbers n of the form k + reverse(k) for exactly two k. A72040

a(0) = 1, a(n) = 32·n² + 2 for n > 0. A10021

Base-10 palindromes that start with 2. A43037

Numbers k such that k³ has only even digits. A52004