Properties of the Number 79220

Seventy-Nine Thousand Two Hundred Twenty

Basics

Value: 79219 → 79220 → 79221

Parity: even

Prime: No

Previous Prime: 79201

Next Prime: 79229

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 17 × 233

Divisors: 1, 2, 4, 5, 10, 17, 20, 34, 68, 85

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011010101110100

Octal: 232564

Duodecimal: 39A18

Hexadecimal: 13574

Square: 6275808400

Square Root: 281.46047679914136

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

Sum over all unlabeled graphs of order n, of the number of graphs obtainable by deletion of a single vertex in the graph. A336544

Sum of first n squares of semiprimes. A217736

Number of nXnXn 0..6 triangular arrays with each element·equal to the number its neighbors equal to 4,3,2,1,2,2,0 for x=0,1,2,3,4,5,6. A198158

Triangle T(n,d) (listed row-wise: T(1,1)=1, T(2,1)=1, T(2,2)=1, T(3,1)=2, T(3,2)=2, T(3,3)=1, ...) giving the number of n-edge general plane trees with root degree d that are fixed by the four-fold application of Catalan Automorphisms A057511/A057512 (Deep rotation of general parenthesizations/plane trees). A79220

Decimal expansion of Lal's constant: the Hardy-Littlewood constant for A217795. A337608