Properties of the Number 20473

Twenty Thousand Four Hundred Seventy-Three

Basics

Value: 20472 → 20473 → 20474

Parity: odd

Prime: No

Previous Prime: 20443

Next Prime: 20477

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 59 × 347

Divisors: 1, 59, 347, 20473

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111111111001

Octal: 47771

Duodecimal: BA21

Hexadecimal: 4ff9

Square: 419143729

Square Root: 143.0838914762944

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

a(n) is the number of numbers removed in each step of Eratosthenes's sieve for 10!. A145537

a(n) = sum of squares of first n odd primes. A133547

E.g.f. satisfies: A'(x) = A(x)⁷ * A(-x)² with A(0) = 1. A236955

Odd composite integers m such that A001906(m-J(m,5)) == 0 (mod m) and gcd(m,5)=1, where J(m,5) is the Jacobi symbol. A340097

Odd composite integers m such that A004187(m-J(m,45)) == 0 (mod m) and gcd(m,45)=1, where J(m,45) is the Jacobi symbol. A340099

Numbers that are both binary palindromes and binary Smith numbers. A334530

Denominators of continued fraction convergents to sqrt(253). A41475

Number of n X 4 1..2 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nondecreasing order. A166805

Number of partitions of n into parts whose bitwise AND equals 0. A307435

Number of binary strings of length n with equal numbers of 00000 and 00100 substrings. A164181