Properties of the Number 80040

Eighty Thousand Forty

Basics

Value: 80039 → 80040 → 80041

Parity: even

Prime: No

Previous Prime: 80039

Next Prime: 80051

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 5 × 23 × 29

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011100010101000

Octal: 234250

Duodecimal: 3A3A0

Hexadecimal: 138a8

Square: 6406401600

Square Root: 282.9134143161119

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

T(n,k) = Number of squarefree words of length n in a (k+1)-ary alphabet. A214943

Number of sensed 2-connected simple planar maps with n edges. A6406

a(n) = 8000·n + 40. A157663

Euler transform of 5 4 3 2 1 1 1 1 1 1 1 ... A29861

Number of squarefree words of length 7 in an (n+1)-ary alphabet. A214946

Number of compositions (ordered partitions) of n into an odd number of powers of 2. A339427

Number of squarefree words of length n in a 6-ary alphabet. A214940

Triangle T(n,k) represents the coefficients of (x¹²*d/dx)ⁿ, where n>=1; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297. A223514

a(n) is the least k such that A056619(k) = prime(n). A280015

The ruler function: exponent of the highest power of 2 dividing 2n. Equivalently, the 2-adic valuation of 2n. A1511