Properties of the Number -2657205

Six Hundred Fifty-Seven Thousand Two Hundred Five

Basics

Value: -2657206 → -2657205 → -2657204

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ¹² × 5

Divisors: 1, 3, 5, 9, 15, 27, 45, 81, 135, 243

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1010001000101110110101

Octal: -12105665

Duodecimal: -A81899

Hexadecimal: -288bb5

Square: 7060738412025

Square Root: 1630.0935555973467

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Triangle read by rows: coefficients T(n,k) of a binomial decomposition of n as Sum(k=0..n)T(n,k)*binomial(n,k). A244142

Least number with exactly n odd divisors. A38547

a(n) = n·3^n-4. A6234

Triangle with columns built from certain power sequences. A67402

Third column of triangle A067402. A67403

Triangle with columns built from certain power sequences. A67417

a(n) = 5·3ⁿ. A5030

a(n) = a(n-1) + a(n-2) + gcd(a(n-1), a(n-2)) for n > 1; a(0)=1, a(1)=1. A83658

1-parking triangle T(r, i, 1) read by rows: T(r, i, k) = (r + 1)^i-1*binomial(k*(r + 1) + r - i - 1, r - i) with k = 1 and 0 <= i <= r. A329057

a(0)=1, a(1)=5, a(n) = -3·a(n-1), n>1. A84244