Properties of the Number 40878

Forty Thousand Eight Hundred Seventy-Eight

Basics

Value: 40877 → 40878 → 40879

Parity: even

Prime: No

Previous Prime: 40867

Next Prime: 40879

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 757

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 757, 1514

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001111110101110

Octal: 117656

Duodecimal: 1B7A6

Hexadecimal: 9fae

Square: 1671010884

Square Root: 202.18308534593095

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 smallest integer m such that m-n is composite and φ(m+n) + σ(m-n) = 2·m. A244447

Number of steps between two valleys at height 0 in the infinite Dyck path in which the k-th ascending line segment has A141285(k) steps and the k-th descending line segment has A194446(k) steps, k >= 1. A233968

A hierarchical sequence (S(W2{2}c) - see A059126). A59133

a(n) = A244447(A246626(n)). A246627

Number of length 3+4 0..n arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two. A248990

a(n) = ∑_k=0..n-1 T(n,k) * T(n,k+1), with T given by A026769. A27240

T(n,k)=Number of length n+4 0..k arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two. A248987

Row sums of absolute values of A182928. A182926

Row sums of A182928. A182927

Continued fraction for sqrt(909). A40878