Properties of the Number 40186

Forty Thousand One Hundred Eighty-Six

Basics

Value: 40185 → 40186 → 40187

Parity: even

Prime: No

Previous Prime: 40177

Next Prime: 40189

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 71 × 283

Divisors: 1, 2, 71, 142, 283, 566, 20093, 40186

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1001110011111010

Octal: 116372

Duodecimal: 1B30A

Hexadecimal: 9cfa

Square: 1614914596

Square Root: 200.46446069066707

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

Number of days after Jan 01 1000 such that the date written in the ISO-8601-format YYYYMMDD is palindromic. A210883

Triangular numbers which have one or more occurrences of exactly five different digits. A241788

Numbers k such that 4 is the smallest decimal digit of k³. A291643

Even triangular numbers with prime indices. A34955

Triangular numbers whose digit permutations yield at least two further triangular numbers. A69674

a(n) = 49*(n*(n+1)/2) + 6. A61792

Hexagonal numbers (A000384) which are sum of 2 other hexagonal numbers > 0. A133215

Hexagonal numbers that are sphenic numbers. A380007

Antidiagonal sums of triangle A092422, which is generated from the even-numbered Fibonacci polynomials (A011973). A92424

a(n) = {n²}_{n²}. A122626