Properties of the Number 19690

Nineteen Thousand Six Hundred Ninety

Basics

Value: 19689 → 19690 → 19691

Parity: even

Prime: No

Previous Prime: 19687

Next Prime: 19697

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 11 × 179

Divisors: 1, 2, 5, 10, 11, 22, 55, 110, 179, 358

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 100110011101010

Octal: 46352

Duodecimal: B48A

Hexadecimal: 4cea

Square: 387696100

Square Root: 140.32106042928837

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

Numbers that are the sum of 8 positive 9th powers. A3397

Sum of 10 nonzero 8th powers. A3388

Number of length-rectangular twice-partitions of n. A306319

a(n) = n³ + 7. A84377

Numbers k at which point A336459(k) appears multiplicative, but A051027(k) does not. A336561

Number of nX5 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 neighboring 1s. A297428

Convolution of A039599 with itself . A152038

Sum of the fourth largest parts in the partitions of n into 6 parts. A308870

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 neighboring 1s. A297431

Decimal expansion of π/23. A19690