Properties of the Number 56720

Fifty-Six Thousand Seven Hundred Twenty

Basics

Value: 56719 → 56720 → 56721

Parity: even

Prime: No

Previous Prime: 56713

Next Prime: 56731

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 5 × 709

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1101110110010000

Octal: 156620

Duodecimal: 289A8

Hexadecimal: dd90

Square: 3217158400

Square Root: 238.15961034566715

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 binary sequences of length n with curling number 2. A217211

Second column of A218869. A218871

Numbers k such that 7·10^k + 3·R_k is prime, where R_k = 11...1 is the repunit (A002275) of length k. A56720