Properties of the Number 30865

Thirty Thousand Eight Hundred Sixty-Five

Basics

Value: 30864 → 30865 → 30866

Parity: odd

Prime: No

Previous Prime: 30859

Next Prime: 30869

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 6173

Divisors: 1, 5, 6173, 30865

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111100010010001

Octal: 74221

Duodecimal: 15A41

Hexadecimal: 7891

Square: 952648225

Square Root: 175.6843760839307

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 twice-partitions of n into distinct strict partitions. A358914

Number of compositions of n in which the smallest part is equal to the number of parts. A98133

Positive numbers k such that the centered cube number k³ + (k+1)³ is equal to the difference of two positive cubes and to A352759(n). A355751

Least number that reaches 1 after n iterations of the infinitary totient function A091732. A333610

Least positive integer m relatively prime to n such that σ(m·n) is a fourth power, where σ(k) is the sum of the divisors of k. A334353

a(n)= 5·a(n-1) -a(n-2) -a(n-3). A108143

Numbers k such that (19·10^k - 61)/3 is prime. A285939

Numbers k such that (418·10^k + 23)/9 is prime. A291710

[ exp(13/19)*n! ]. A30865