71791672 has 32 divisors (see below), whose sum is σ = 138510000. Its totient is φ = 34870528.

The previous prime is 71791669. The next prime is 71791673. The reversal of 71791672 is 27619717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71791673) 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, 41154 + ... + 42862.

Almost surely, 2^71791672 is an apocalyptic number.

It is an amenable number.

71791672 is a deficient number, since it is larger than the sum of its proper divisors (66718328).

71791672 is a wasteful number, since it uses less digits than its factorization.

71791672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863 (or 1859 counting only the distinct ones).

The product of its digits is 37044, while the sum is 40.

The square root of 71791672 is about 8472.9966363737. The cubic root of 71791672 is about 415.6151365327.

The spelling of 71791672 in words is "seventy-one million, seven hundred ninety-one thousand, six hundred seventy-two".