Properties of the Number 20148

Twenty Thousand One Hundred Forty-Eight

Basics

Value: 20147 → 20148 → 20149

Parity: even

Prime: No

Previous Prime: 20147

Next Prime: 20149

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 23 × 73

Divisors: 1, 2, 3, 4, 6, 12, 23, 46, 69, 73

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100111010110100

Octal: 47264

Duodecimal: B7B0

Hexadecimal: 4eb4

Square: 405941904

Square Root: 141.94365079143202

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

Initial members of abundant quadruplets, i.e., values of k such that (k, k+2, k+4, k+6) are all abundant numbers. A231089

Number of terms in n-th derivative of a function composed with itself 5 times. A22813

Walks with n steps on the x-axis using steps {1,0,-1} and visiting no point more than twice. A212589

G.f.: 2·q * ∏_n>=1 (1 + q^2·n)/((1 + qⁿ)*(1 + q^2·n-1)*(1 + q^4·n)) in powers of q. A293132

Numbers k for which rank of the elliptic curve y²=x³+k·x is 4. A309031

Number of binary [ n,4 ] codes of dimension <= 4 without zero columns. A34338

Consecutive internal states of the linear congruential pseudo-random number generator (321·s + 123) mod 10⁵ when started at 1. A383128

Number of length n+3 0..2 arrays with at most one downstep in every n consecutive neighbor pairs. A255110

Number of j-sets in symmetric group S_n. A125548

Numbers n such that (k!+n)/(k+n) is prime for some k. A242916