Properties of the Number -356643

Three Hundred Fifty-Six Thousand Six Hundred Forty-Three

Basics

Value: -356644 → -356643 → -356642

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 7 × 17 × 37

Divisors: 1, 3, 7, 9, 17, 21, 27, 37, 51, 63

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -1010111000100100011

Octal: -1270443

Duodecimal: -152483

Hexadecimal: -57123

Square: 127194229449

Square Root: 597.1959477424474

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

Kaprekar numbers: positive numbers n such that n = q+r and n² = q·10^m+r, for some m >= 1, q >= 0 and 0 <= r < 10^m, with n ≠ 10^a, a >= 1. A6886

a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 0, 1, 1, 0. A25250

Another version of the Kaprekar numbers (A006886): n such that n = q+r and n² = q·10^m+r, for some m >= 1, q >= 0 and 0 <= r < 10^m, with n ≠ 10^a, a >= 1 and n an m-digit number. A53816

Kaprekar numbers: numbers k such that k = q + r and k² = q·10^m + r, for some m >= 1, q >= 0 and 0 <= r < 10^m. Here q and r must both have the same number of digits. A45913

The full list of 6-Kaprekar numbers. A53397

Kaprekar numbers, allowing powers of 10: n such that n=q+r and n²=q·10^m+r, for some m >= 1, q>=0 and 0<=r<10^m. A248353

Square roots of terms in A238237. A290449

Numbers k such that k + 1 divides 3^k + 1. A370578

Kaprekar numbers (A006886) that are divisible by the sum of their digits. A382165