Properties of the Number -1604

Six Hundred Four

Basics

Value: -1605 → -1604 → -1603

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 401

Divisors: 1, 2, 4, 401, 802, 1604

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -11001000100

Octal: -3104

Duodecimal: -B18

Hexadecimal: -644

Square: 2572816

Square Root: 40.049968789001575

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

Alternating sum of heptagonal pyramidal numbers. A269428

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 355", based on the 5-celled von Neumann neighborhood. A271408

Number of compositions of n into prime parts. A23360

a(n) = n² + 4. A87475

Numbers m such that the factorizations of m..m+2 have the same number of primes (including multiplicities). A45939

Partial sums of the squarefree numbers, A005117. A173143

Number of partitions of n such that smaller parts do not occur more frequently than greater parts. A171979

a(n) = A003146(A003146(n)). A319972

T(n,k)=Number of length n 1..(k+1) arrays with every leading partial sum divisible by 2, 3 or 5. A254827

Numbers such that the arithmetic mean of the cubes of their prime factors (taken with multiplicity) is a prime. A134619