Properties of the Number 73920

Seventy-Three Thousand Nine Hundred Twenty

Basics

Value: 73919 → 73920 → 73921

Parity: even

Prime: No

Previous Prime: 73907

Next Prime: 73939

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ⁶ × 3 × 5 × 7 × 11

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 10, 11

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10010000011000000

Octal: 220300

Duodecimal: 36940

Hexadecimal: 120c0

Square: 5464166400

Square Root: 271.8823274874629

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

Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n, having k ddu's [here u = (1,1) and d = (1,-1)]. A91894

Triangle read by rows: T(n,k) = 2^n-k*prime(k)#, 1 <= k <= n, where prime(k)# is the product of first k primes. A303555

Numbers whose prime indices and prime signature have the same mean. A359903

Smallest triangular number divisible by exactly n triangular numbers. A76983

Numbers with exactly 5 distinct prime divisors {2,3,5,7,11}. A147572

Triangular numbers that are sums of two consecutive primes. A111163

Number of ways to place 2 nonattacking nightriders on an n X n board. A172141

a(n) is the denominator of the probability that the free polyomino with binary code A246521(n+1) appears in the version of the Eden growth model described in A367671 when n square cells have been added. A367672

Triangular numbers that set a new record for number of triangular divisors. A84260

Triangle T, read by rows, where T(n,k) = A008544(n-k)*C(n,k) where A008544 equals the triple factorials in column 0. A136216