Properties of the Number 80428

Eighty Thousand Four Hundred Twenty-Eight

Basics

Value: 80427 → 80428 → 80429

Parity: even

Prime: No

Previous Prime: 80407

Next Prime: 80429

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 20107

Divisors: 1, 2, 4, 20107, 40214, 80428

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011101000101100

Octal: 235054

Duodecimal: 3A664

Hexadecimal: 13a2c

Square: 6468663184

Square Root: 283.59830747026683

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

Number of compositions of n into a square number of parts. A103198

a(n) = ∑_{k=0..floor(4·n/7)} binomial(k,4·n-7·k). A392355

Number of compositions of 8·n into parts 7 and 8. A373913

Number of ordered set partitions of the multiset [a,a,1,1,...,1] with two "a" and n "1". A209633

First differences of A079255. A80428

Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically. A207906