Properties of the Number 40392

Forty Thousand Three Hundred Ninety-Two

Basics

Value: 40391 → 40392 → 40393

Parity: even

Prime: No

Previous Prime: 40387

Next Prime: 40423

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ³ × 11 × 17

Divisors: 1, 2, 3, 4, 6, 8, 9, 11, 12, 17

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1001110111001000

Octal: 116710

Duodecimal: 1B460

Hexadecimal: 9dc8

Square: 1631513664

Square Root: 200.97761069333072

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 that are the sum of 6 positive 9th powers. A3395

T(n,k)=Number of nXnXn triangular 0..k arrays with some element plus some adjacent element totalling k+1 exactly once. A270509

Base 4 perfect digital invariants (written in base 10): numbers equal to the sum of the k-th powers of their base-4 digits, for some k. A162219

a(n) = n*(n+5)*(n+6)*(n+7)/24. A5587

T(n,k) = Number of n X k 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally or antidiagonally. A233155

G.f.: 4th root of Eisenstein series E₁₀ (cf. A013974). A110150

Numbers with prime factorization p·q*r³*s³ (where p, q, r, s are distinct primes). A190108

a(n) = ∑_{x₁∣n, x₂∣n, x₃∣n, x₄∣n, x₅∣n} gcd(x₁,x₂,x₃,x₄,x₅). A344139

T(2n+4,n), array T as in A055794. A55797

Area A of the cyclic quadrilaterals PQRS with PQ>=QR>=RS>=SP, such that A, the sides, the radius of the circumcircle and the two diagonals are integers. A219225