Properties of the Number 40010

Forty Thousand Ten

Basics

Value: 40009 → 40010 → 40011

Parity: even

Prime: No

Previous Prime: 40009

Next Prime: 40013

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 4001

Divisors: 1, 2, 5, 10, 4001, 8002, 20005, 40010

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110001001010

Octal: 116112

Duodecimal: 1B1A2

Hexadecimal: 9c4a

Square: 1600800100

Square Root: 200.02499843769527

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

Łukasiewicz word for each rooted plane tree (interpretation e in Stanley's exercise 19) encoded by A014486 (or A063171), with the last leaf implicit, i.e., these words are given without the last trailing zero, except for the null tree which is encoded as 0. A71153

Number of connected, unlabeled, unrooted distance-hereditary graphs on n vertices. A277862

a(n) is the smallest number whose factorial has 10ⁿ trailing zeros. A173558

a(n) = 100·n² + 10. A158492

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 40. A31718

Numbers k such that k and k² use only the digits 0, 1, 4, 6 and 8. A136861

a(n)! has exactly 10ⁿ trailing zeros (a(n) = -1 if no such number exists). A173292

Let x(0)x(1)x(2)... x(q) denote the decimal expansion of n. Sequence lists the numbers n such that the suffix of decimal expansion x(1)x(2)... x(q) is the x(0)-th divisor of n. A234314

Consider a number k with m decimal digits, the prefix p of length m-1 and the suffix s of length m-1. The sequence lists the numbers k such that σ(k) = σ(p)*σ(s) where σ(x) is the sum of the divisors of x. A244313

Continued fraction for π*exp(-π²/2). A40010