Properties of the Number 70720

Seventy Thousand Seven Hundred Twenty

Basics

Value: 70719 → 70720 → 70721

Parity: even

Prime: No

Previous Prime: 70717

Next Prime: 70729

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ⁶ × 5 × 13 × 17

Divisors: 1, 2, 4, 5, 8, 10, 13, 16, 17, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001010001000000

Octal: 212100

Duodecimal: 34B14

Hexadecimal: 11440

Square: 5001318400

Square Root: 265.9323222175146

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

Sorted positions of first appearances in A367905. A367911

Least number k such that there are exactly n ways to choose a different binary index of each binary index of k. A367910

Factorial splitting: write n! = x·y*z with x<y<z and·maximal and z is minimal; sequence gives value of y. A61031

The Geode Bi-Tri infinite rectangular array, read by upward antidiagonals. A383453

Triangle read by rows: the x = 1+q Narayana triangle at m=2. A243660

a(n) = A351477(n) * FA where F is the Fermat point of a primitive integer-sided triangle ABC with A < B < C < 2*π/3 and FA + FB + FC = A336329(n). A351801

Partial sums of A051923. A50494

Factorial splitting: write n! = x·y*z with x <= y <= z and minimal z-x; sequence gives value of y. A355190

Expansion of (1 + x²*C)*C², where C = (1 - sqrt(1-4·x))/(2·x) is g.f. for Catalan numbers, A000108. A71717

Number of solutions to a+b+c < d+e with each of a,b,c,d,e in {1..n+1}. A179441