71897272 has 32 divisors (see below), whose sum is σ = 139431600. Its totient is φ = 34732800.

The previous prime is 71897269. The next prime is 71897281. The reversal of 71897272 is 27279817.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34747 + ... + 36757.

Almost surely, 2^71897272 is an apocalyptic number.

It is an amenable number.

71897272 is a deficient number, since it is larger than the sum of its proper divisors (67534328).

71897272 is a wasteful number, since it uses less digits than its factorization.

71897272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167 (or 2163 counting only the distinct ones).

The product of its digits is 98784, while the sum is 43.

The square root of 71897272 is about 8479.2259080650. The cubic root of 71897272 is about 415.8188159459.

The spelling of 71897272 in words is "seventy-one million, eight hundred ninety-seven thousand, two hundred seventy-two".