Properties of the Number -2729

Seven Hundred Twenty-Nine

Basics

Value: -2730 → -2729 → -2728

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2729

Divisors: 1, 2729

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101010101001

Octal: -5251

Duodecimal: -16B5

Hexadecimal: -aa9

Square: 7447441

Square Root: 52.23983154643591

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

a(n) = (5 + (-2)ⁿ)/3. A140966

Generalized Somos-5 sequence a(n) = (a(n-1)*a(n-4) + a(n-2)*a(n-3))/a(n-5) = -a(-n), a(1) = 1, a(2) = -1, a(3) = a(4) = 1, a(5) = -7. A360381

A generalized Jacobsthal sequence. A83943

Inverse binomial transform of A084640. A171501

Primes p such that p² + p + 1 is prime. A53182

Dispersion of A042948 (numbers >3, congruent to 0 or 1 mod 4), by antidiagonals. A191663

Honaker primes: primes P(k) such that sum of digits of P(k) equals sum of digits of k. A33548

Primes congruent to 1 mod 31. A142005

Primes of the form x² + 40y². A107145

Prime self (or Colombian) numbers: primes not expressible as the sum of an integer and its digit sum. A6378