Properties of the Number 21448

Twenty-One Thousand Four Hundred Forty-Eight

Basics

Value: 21447 → 21448 → 21449

Parity: even

Prime: No

Previous Prime: 21433

Next Prime: 21467

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 7 × 383

Divisors: 1, 2, 4, 7, 8, 14, 28, 56, 383, 766

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101001111001000

Octal: 51710

Duodecimal: 104B4

Hexadecimal: 53c8

Square: 460016704

Square Root: 146.45135711218248

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 ∏_m>=1 1/(1 - m·q^m)⁸. A22732

Number of ways to fold a strip of n stamps taking account of order and direction of folds. A110837

Generating primitive Pythagorean triangles by using (n, n+1) gives perimeters for each n. This sequence lists the sum of these perimeters for each n triangles. A193068

Number of partitions of n into parts not of the form 21k, 21k+4 or 21k-4. Also number of partitions with at most 3 parts of size 1 and differences between parts at distance 9 are greater than 1. A35982

Triangle T(n,d) read by rows: Number of ascent sequences of length n with d zeros. A175579

Decimal expansion of 1/444. A21448