Properties of the Number 72075

Seventy-Two Thousand Seventy-Five

Basics

Value: 72074 → 72075 → 72076

Parity: odd

Prime: No

Previous Prime: 72073

Next Prime: 72077

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ² × 31 ²

Divisors: 1, 3, 5, 15, 25, 31, 75, 93, 155, 465

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001100110001011

Octal: 214613

Duodecimal: 35863

Hexadecimal: 1198b

Square: 5194805625

Square Root: 268.46787517317597

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

Nonnegative values·of solutions (x, y) to the Diophantine equation x²+(x+217)² = y². A198294

Odd numbers k that divide φ(k)*σ(k). A15706

Denominators of continued fraction convergents to sqrt(163). A41301

Composite numbers k+1 such that k*φ(k+1) is a perfect square. A69068

Gaussian binomial coefficient [n, 3] for q = 2. A6096

Smallest solution to φ(x) = 10ⁿ where φ(x) = A000010(x). A72075