71271944 has 16 divisors (see below), whose sum is σ = 135466620. Its totient is φ = 35147520.

The previous prime is 71271943. The next prime is 71271947. The reversal of 71271944 is 44917217.

It can be written as a sum of positive squares in 2 ways, for example, as 70392100 + 879844 = 8390^2 + 938^2 .

It is not an unprimeable number, because it can be changed into a prime (71271943) 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, 60437 + ... + 61604.

Almost surely, 2^71271944 is an apocalyptic number.

It is an amenable number.

71271944 is a deficient number, since it is larger than the sum of its proper divisors (64194676).

71271944 is a wasteful number, since it uses less digits than its factorization.

71271944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122120 (or 122116 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 71271944 is about 8442.2712583759. The cubic root of 71271944 is about 414.6097730187.

The spelling of 71271944 in words is "seventy-one million, two hundred seventy-one thousand, nine hundred forty-four".