Properties of the Number 18070

Eighteen Thousand Seventy

Basics

Value: 18069 → 18070 → 18071

Parity: even

Prime: No

Previous Prime: 18061

Next Prime: 18077

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 13 × 139

Divisors: 1, 2, 5, 10, 13, 26, 65, 130, 139, 278

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011010010110

Octal: 43226

Duodecimal: A55A

Hexadecimal: 4696

Square: 326524900

Square Root: 134.42470011125187

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 partitions of n such that the least part occurs exactly twice. A96373

Truncated square pyramid numbers: a(n) = ∑_{k = n..2·n-1} k². A50410

Greatest number m such that the fractional part of (π-2)^A153717(n) <= 1/m. A153721

a(n) = ∑_{k=0..floor(n/2)} (n-k)². A129371

The number of edges inside a cross with width 3 and height n (see Comments in A331455 for definition) formed by the straight line segments mutually connecting all vertices and all points. A330851

Row 3 of array in A047666. A47667

Half the number of length n integer sequences with sum zero and sum of squares 3698. A157575

Numbers k such that k!6 - 3 is prime, where k!6 is the sextuple factorial number (A085158). A279646

Maximum value of the cyclic convolution of the first n positive integers with themselves. A294172

Number of ordered pairs (k, m) with k > 0 and m > 0 such that n = π(k*(k+1)/2) + π(m*(3·m-1)/2), where π(x) denotes the number of primes not exceeding x. A263020