Properties of the Number 73780

Seventy-Three Thousand Seven Hundred Eighty

Basics

Value: 73779 → 73780 → 73781

Parity: even

Prime: No

Previous Prime: 73771

Next Prime: 73783

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 7 × 17 × 31

Divisors: 1, 2, 4, 5, 7, 10, 14, 17, 20, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10010000000110100

Octal: 220064

Duodecimal: 36844

Hexadecimal: 12034

Square: 5443488400

Square Root: 271.624741141156

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

Quadrinomial coefficients: C(2+n,n) + C(3+n,n) + C(4+n,n). A5718

Number of symmetric racks of order n, up to isomorphism. A386231

a(n) = ((2^b-1)/φ(n))*∑_d∣n Moebius(n/d)*d^b-1 for b = 5. A160894

Number of (n+1) X 2 binary arrays with no 2 X 2 subblock sum equal to any horizontal or vertical neighbor 2 X 2 subblock sum. A185790

Degrees of irreducible representations of orthogonal group O10+(2). A214472

T(n,k) = Number of (n+1) X (k+1) binary arrays with no 2 X 2 subblock sum equal to any horizontal or vertical neighbor 2 X 2 subblock sum. A185798

Number of 1's in base 3 representation of n-th prime. A73780