Properties of the Number -91388

Ninety-One Thousand Three Hundred Eighty-Eight

Basics

Value: -91389 → -91388 → -91387

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 11 × 31 × 67

Divisors: 1, 2, 4, 11, 22, 31, 44, 62, 67, 124

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -10110010011111100

Octal: -262374

Duodecimal: -44A78

Hexadecimal: -164fc

Square: 8351766544

Square Root: 302.30448226911886

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

Numbers k whose abundance is 8: σ(k) - 2·k = 8. A88833

Primitive weird numbers: weird numbers with no proper weird divisors. A2975

Numbers k such that σ(k) == 8 (mod k). A45770

Primitive weird numbers (PWN) of the form 2^k*p·q*r with k > 0 and where p < q < r are odd primes. A258883

Primitive weird numbers (A002975) of the form 2^k*p·q*x with k >= 0 and odd p, q, x >= 3. A258401

Numbers k such that σ(k) == 0 (mod k+4). A274553

Primitive weird numbers (pwn) (A002975) whose abundance (A033880) is a power of 2 (A000079). A258250

Near-multiperfects with primes, powers of 2 and 6·prime excluded, abs(σ(n) mod n) <= log(n). A117349

Near-multiperfects with primes, powers of 2, 6·prime and 2ⁿ * prime excluded, abs(σ(n) mod n) <= log(n). A117350

Weird admirable numbers: numbers that are both weird (A006037) and admirable (A111592). A329190