71973838 has 8 divisors (see below), whose sum is σ = 108256032. Its totient is φ = 35888496.

The previous prime is 71973833. The next prime is 71973851. The reversal of 71973838 is 83837917.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71973833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48295 + ... + 49762.

It is an arithmetic number, because the mean of its divisors is an integer number (13532004).

Almost surely, 2^71973838 is an apocalyptic number.

71973838 is a deficient number, since it is larger than the sum of its proper divisors (36282194).

71973838 is a wasteful number, since it uses less digits than its factorization.

71973838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98426.

The product of its digits is 254016, while the sum is 46.

The square root of 71973838 is about 8483.7396235387. The cubic root of 71973838 is about 415.9663704015.

The spelling of 71973838 in words is "seventy-one million, nine hundred seventy-three thousand, eight hundred thirty-eight".