71994136 has 16 divisors (see below), whose sum is σ = 135084600. Its totient is φ = 35971584.

The previous prime is 71994127. The next prime is 71994151. The reversal of 71994136 is 63149917.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14775 + ... + 19033.

Almost surely, 2^71994136 is an apocalyptic number.

It is an amenable number.

71994136 is a deficient number, since it is larger than the sum of its proper divisors (63090464).

71994136 is a wasteful number, since it uses less digits than its factorization.

71994136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6378 (or 6374 counting only the distinct ones).

The product of its digits is 40824, while the sum is 40.

The square root of 71994136 is about 8484.9358276890. The cubic root of 71994136 is about 416.0054702190.

The spelling of 71994136 in words is "seventy-one million, nine hundred ninety-four thousand, one hundred thirty-six".