Properties of the Number -404550

Four Hundred Four Thousand Five Hundred Fifty

Basics

Value: -404551 → -404550 → -404549

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 ² × 29 × 31

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 25

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100010110001000110

Octal: -1426106

Duodecimal: -176146

Hexadecimal: -62c46

Square: 163660702500

Square Root: 636.0424514134257

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) = n² * (n² - 1)/2. A83374

Integral factorial ratio sequence: a(n) = (8·n)!*(3·n)!/((6·n)!*(4·n)!*n!). A211421

Row sums of the triangle A045975. A204558

Numbers k such that φ(k) is equal to A008473(k). A39779

Triangular numbers that are the product of a triangular number and an oblong number. A253652

Triangular numbers n such that each decimal digit of n is equal to the difference of at least two other digits of n. A255917

Triangular numbers composed of digits {0,4,5}. A119071

The smaller of two consecutive triangular numbers which are permutations of each other. A247305

Numbers k such that φ(k) = ∑_d∣k core(d) where core(x) is the squarefree part of x (A007913). A74786

1 / min{1/n - 1/a - 1/b > 0}, where a and b are integers. A45470