Properties of the Number 57720

Fifty-Seven Thousand Seven Hundred Twenty

Basics

Value: 57719 → 57720 → 57721

Parity: even

Prime: No

Previous Prime: 57719

Next Prime: 57727

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 5 × 13 × 37

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 13

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110000101111000

Octal: 160570

Duodecimal: 294A0

Hexadecimal: e178

Square: 3331598400

Square Root: 240.249869927124

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

Nearest integer to (n/2)⁴. A11863

a(n) = floor((n + 1/2)⁴). A219086

Square array A(row,col) = ∑_k=0..row binomial(row,k)*(1+col+k)!, read by descending antidiagonals as A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), ... A276588

Binomial triangle based on factorials. A76571

a(n) = n*(7·n² + 15·n + 8)/6. A245301

a(n) = ∑_{k = 0..3} (n+k)! C(3,k). A1345

Transpose of A276588. A276589

Numbers k such that A011772(k) > A344878(k) and A011772(k) is a divisor of A344875(k). A344595

Positive integers n such that n² = (x⁴ - y⁴)*(z⁴ - t⁴) where x>y and z>t are distinct pairs of integers with gcd(x,y)=gcd(z,t)=1. A147856

a(n) = 2*(n-1)*(n² + 1). A71233