71444 has 12 divisors (see below), whose sum is σ = 127764. Its totient is φ = 34944.

The previous prime is 71443. The next prime is 71453. The reversal of 71444 is 44417.

71444 = T₁₈₇ + T₁₈₈ + ... + T₁₉₀.

It can be written as a sum of positive squares in 2 ways, for example, as 35344 + 36100 = 188^2 + 190^2 .

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44 + ... + 380.

It is an arithmetic number, because the mean of its divisors is an integer number (10647).

2⁷¹⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

71444 is a deficient number, since it is larger than the sum of its proper divisors (56320).

71444 is a wasteful number, since it uses less digits than its factorization.

71444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 392 counting only the distinct ones).

The product of its digits is 448, while the sum is 20.

The square root of 71444 is about 267.2901045681. The cubic root of 71444 is about 41.4943138288.

It can be divided in two parts, 71 and 444, that added together give a palindrome (515).

The spelling of 71444 in words is "seventy-one thousand, four hundred forty-four", and thus it is an iban number.