Properties of the Number 89870

Eighty-Nine Thousand Eight Hundred Seventy

Basics

Value: 89869 → 89870 → 89871

Parity: even

Prime: No

Previous Prime: 89867

Next Prime: 89891

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 11 × 19 × 43

Divisors: 1, 2, 5, 10, 11, 19, 22, 38, 43, 55

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111100001110

Octal: 257416

Duodecimal: 44012

Hexadecimal: 15f0e

Square: 8076616900

Square Root: 299.78325503603435

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 nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= n/2. A47163

Number of nX3 binary arrays with each sum of a(1..i,1..j) no greater than i·j/2 and rows and columns in nondecreasing order. A183410

Products of 5 distinct primes that are sandwiched between sphenic numbers. A376929

Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= (n-1)/2. A47174

a(1) = 1; for n > 1, a(n) is the smallest positive number that has not yet appeared that shares a factor with a(n-1) and whose binary expansion has a single 1-bit in common with the binary expansion of a(n-1). A354087

Permutation of natural numbers induced by the Catalan bijection gma089870 acting on the parenthesizations/binary trees encoded by A014486/A063171. A89870