Properties of the Number 87390

Eighty-Seven Thousand Three Hundred Ninety

Basics

Value: 87389 → 87390 → 87391

Parity: even

Prime: No

Previous Prime: 87383

Next Prime: 87403

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 971

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10101010101011110

Octal: 252536

Duodecimal: 426A6

Hexadecimal: 1555e

Square: 7637012100

Square Root: 295.6179967458003

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

Even numbers k such that 6k+1, 12k+1, 18k+1, 36k+1 and 72k+1 are all primes. A206349

Numbers m such that 6m+1, 12m+1, 18m+1, 36m+1 and 72m+1 are all prime. A257035

Partial sums of A005578. A86445

Sum of the largest parts in the partitions of 3n into 3 parts. A236370

a(1) = 7; a(n+1) is the least prime formed by adding one or more digits to the digit reversal of a(n). A87390