71381382 has 16 divisors (see below), whose sum is σ = 144367920. Its totient is φ = 23526272.

The previous prime is 71381381. The next prime is 71381467. The reversal of 71381382 is 28318317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71381381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66303 + ... + 67370.

It is an arithmetic number, because the mean of its divisors is an integer number (9022995).

Almost surely, 2^71381382 is an apocalyptic number.

71381382 is an abundant number, since it is smaller than the sum of its proper divisors (72986538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71381382 is a wasteful number, since it uses less digits than its factorization.

71381382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133767.

The product of its digits is 8064, while the sum is 33.

The square root of 71381382 is about 8448.7503217932. The cubic root of 71381382 is about 414.8218754611.

Adding to 71381382 its reverse (28318317), we get a palindrome (99699699).

The spelling of 71381382 in words is "seventy-one million, three hundred eighty-one thousand, three hundred eighty-two".