Properties of the Number -162165

One Hundred Sixty-Two Thousand One Hundred Sixty-Five

Basics

Value: -162166 → -162165 → -162164

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 19 × 569

Divisors: 1, 3, 5, 15, 19, 57, 95, 285, 569, 1707

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100111100101110101

Octal: -474565

Duodecimal: -79A19

Hexadecimal: -27975

Square: 26297487225

Square Root: 402.697156682289

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) is the number of binary strings of length n such that no subsequence of length 5 or less contains 3 or more ones. A120118

Triangular numbers whose external digits as well as internal digits form triangular numbers. A77368

Lucky numbers that are decimal concatenations of n with n + 3. A32653

Smallest n-digit triangular number whose external digits as well as internal digits form triangular numbers, or -1 if no such number exists. A77369