Properties of the Number -1388

Three Hundred Eighty-Eight

Basics

Value: -1389 → -1388 → -1387

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 347

Divisors: 1, 2, 4, 347, 694, 1388

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101101100

Octal: -2554

Duodecimal: -978

Hexadecimal: -56c

Square: 1926544

Square Root: 37.255872020394314

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

Expansion of ∏_m>=1 (1+q^m)^-4. A22599

Expansion of 1/∑_k>=0 (k+1)^k+1*x^k. A296617

McKay-Thompson series of class 12f for the Monster group. A112149

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 113", based on the 5-celled von Neumann neighborhood. A270180

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 251", based on the 5-celled von Neumann neighborhood. A271019

Number of leaf nodes in a binary tree. A112088

List of codewords in binary lexicode with Hamming distance 4 written as decimal numbers. A75928

a(n) = 4·n² - 3·n + 1. A54552

Number of partitions of n such that the least part occurs exactly twice. A96373

Numbers m such that the Bernoulli number B_m has denominator 30. A51226