Properties of the Number 80457

Eighty Thousand Four Hundred Fifty-Seven

Basics

Value: 80456 → 80457 → 80458

Parity: odd

Prime: No

Previous Prime: 80449

Next Prime: 80471

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 13 × 2063

Divisors: 1, 3, 13, 39, 2063, 6189, 26819, 80457

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011101001001001

Octal: 235111

Duodecimal: 3A689

Hexadecimal: 13a49

Square: 6473328849

Square Root: 283.64943151714584

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) = ∑_j=1..n j·prime(j). A14285

Numbers m with the property that its k-th smallest divisor, for all 1 <= k <= τ(m), contains exactly k "1" digits in its binary representation. A255401

A generalized Engel expansion of 1/π. A232327

Numerator of the barycenter of first n primes defined as a(n) = numerator(∑_i=1..n (i·prime(i)) / ∑_i=1..n prime(i)). A306834

a(1)=3; for n>1, a(n)=a(n-1) if n is already in the sequence, a(n)=a(n-1)+4 otherwise. A80457

Table read by antidiagonals: Place k points in general position on each side of a regular n-gon and join every pair of the n*(k+1) boundary points by a chord; T(n,k) (n >= 3, k >= 0) gives number of vertices in the resulting planar graph. A367183