71571412 has 48 divisors (see below), whose sum is σ = 142394112. Its totient is φ = 31191680.

The previous prime is 71571407. The next prime is 71571413. The reversal of 71571412 is 21417517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71571413) 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 15 ways as a sum of consecutive naturals, for example, 109278 + ... + 109930.

It is an arithmetic number, because the mean of its divisors is an integer number (2966544).

Almost surely, 2^71571412 is an apocalyptic number.

It is an amenable number.

71571412 is a deficient number, since it is larger than the sum of its proper divisors (70822700).

71571412 is a wasteful number, since it uses less digits than its factorization.

71571412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 766 counting only the distinct ones).

The product of its digits is 1960, while the sum is 28.

The square root of 71571412 is about 8459.9888888816. The cubic root of 71571412 is about 415.1896592824.

Adding to 71571412 its reverse (21417517), we get a palindrome (92988929).

It can be divided in two parts, 715 and 71412, that added together give a palindrome (72127).

The spelling of 71571412 in words is "seventy-one million, five hundred seventy-one thousand, four hundred twelve".