71673172 has 24 divisors (see below), whose sum is σ = 128709000. Its totient is φ = 34909056.

The previous prime is 71673163. The next prime is 71673193. The reversal of 71673172 is 27137617.

It can be written as a sum of positive squares in 4 ways, for example, as 16 + 71673156 = 4^2 + 8466^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30454 + ... + 32722.

It is an arithmetic number, because the mean of its divisors is an integer number (5362875).

Almost surely, 2^71673172 is an apocalyptic number.

It is an amenable number.

71673172 is a deficient number, since it is larger than the sum of its proper divisors (57035828).

71673172 is a wasteful number, since it uses less digits than its factorization.

71673172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475 (or 2473 counting only the distinct ones).

The product of its digits is 12348, while the sum is 34.

The square root of 71673172 is about 8466.0009449562. Note that the first 3 decimals coincide. The cubic root of 71673172 is about 415.3863378670.

The spelling of 71673172 in words is "seventy-one million, six hundred seventy-three thousand, one hundred seventy-two".