Properties of the Number 16400

Sixteen Thousand Four Hundred

Basics

Value: 16399 → 16400 → 16401

Parity: even

Prime: No

Previous Prime: 16381

Next Prime: 16411

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 5 ² × 41

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000000010000

Octal: 40020

Duodecimal: 95A8

Hexadecimal: 4010

Square: 268960000

Square Root: 128.06248474865697

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

a(n) = n*(n² + 1)/2. A6003

9-gonal (or enneagonal) pyramidal numbers: a(n) = n*(n+1)*(7·n-4)/6. A7584

a(n) = (8ⁿ + 2ⁿ)/2. A81342

Number of paraffins. A5997

a(n) = ∑_{k=1..n, gcd(n,k) = 1} k³. A53819

a(n) = n²*(2·n+1). A99721

Triangle T(m,k) read by rows, where T(m,k) is the number of ways in which 1 <= k <= m positions can be picked in an m X m square grid such that the picked positions have a line symmetry. A291718

Numbers whose square can be represented in exactly two ways as the sum of a positive square and a positive fourth power. A345700

a(n) = 1 + 2^n-1 + n for n > 0, a(0) = 2. A52968

a(n) = (n - 1)*(4·n² - 8·n + 5). A317297