71873441 has 4 divisors (see below), whose sum is σ = 71892612. Its totient is φ = 71854272.

The previous prime is 71873437. The next prime is 71873453. The reversal of 71873441 is 14437817.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1380625 + 70492816 = 1175^2 + 8396^2 .

It is a cyclic number.

It is not a de Polignac number, because 71873441 - 2² = 71873437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71873341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1916 + ... + 12141.

It is an arithmetic number, because the mean of its divisors is an integer number (17973153).

Almost surely, 2^71873441 is an apocalyptic number.

It is an amenable number.

71873441 is a deficient number, since it is larger than the sum of its proper divisors (19171).

71873441 is a wasteful number, since it uses less digits than its factorization.

71873441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19170.

The product of its digits is 18816, while the sum is 35.

The square root of 71873441 is about 8477.8205336041. The cubic root of 71873441 is about 415.7728685686.

The spelling of 71873441 in words is "seventy-one million, eight hundred seventy-three thousand, four hundred forty-one".