71945882 has 4 divisors (see below), whose sum is σ = 107918826. Its totient is φ = 35972940.

The previous prime is 71945869. The next prime is 71945891. The reversal of 71945882 is 28854917.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 71893441 + 52441 = 8479^2 + 229^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17986469 + ... + 17986472.

Almost surely, 2^71945882 is an apocalyptic number.

71945882 is a deficient number, since it is larger than the sum of its proper divisors (35972944).

71945882 is a wasteful number, since it uses less digits than its factorization.

71945882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35972943.

The product of its digits is 161280, while the sum is 44.

The square root of 71945882 is about 8482.0918410496. The cubic root of 71945882 is about 415.9125070251.

It can be divided in two parts, 71945 and 882, that added together give a palindrome (72827).

The spelling of 71945882 in words is "seventy-one million, nine hundred forty-five thousand, eight hundred eighty-two".