Properties of the Number -247456

Two Hundred Forty-Seven Thousand Four Hundred Fifty-Six

Basics

Value: -247457 → -247456 → -247455

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ⁵ × 11 × 19 × 37

Divisors: 1, 2, 4, 8, 11, 16, 19, 22, 32, 37

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

375 Try Today's Challenge

Representations

Binary: -111100011010100000

Octal: -743240

Duodecimal: -BB254

Hexadecimal: -3c6a0

Square: 61234471936

Square Root: 497.44949492385655

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

Doubly triangular numbers: a(n) = n*(n+1)*(n²+n+2)/8. A2817

Array read by antidiagonals: T(n,k)=T(n,k-1)*(T(n,k-1)+k-1)/k with T(n,1)=n. A61315

a(n) = (m(n)² + 3)*(m(n)² + 7)/32, where m(n) = 2·n - 1. A336535

Triangular numbers whose sum of triangular divisors is also triangular and greater than 1. A209310

Triangular array: rows are the f-vectors of simplicial complexes dual to permutohedra of type D_n. A145902

Triangular numbers which are 8-almost primes. A76582

Sequence of coefficients of x¹ in marked mesh pattern generating function Q_n,132^0,4,0,0(x). A212347