71873118 has 12 divisors (see below), whose sum is σ = 155725128. Its totient is φ = 23957700.

The previous prime is 71873117. The next prime is 71873119. The reversal of 71873118 is 81137817.

It is an interprime number because it is at equal distance from previous prime (71873117) and next prime (71873119).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71873117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1996458 + ... + 1996493.

It is an arithmetic number, because the mean of its divisors is an integer number (12977094).

Almost surely, 2^71873118 is an apocalyptic number.

71873118 is an abundant number, since it is smaller than the sum of its proper divisors (83852010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71873118 is a wasteful number, since it uses less digits than its factorization.

71873118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992959 (or 3992956 counting only the distinct ones).

The product of its digits is 9408, while the sum is 36.

The square root of 71873118 is about 8477.8014838754. The cubic root of 71873118 is about 415.7722457385.

The spelling of 71873118 in words is "seventy-one million, eight hundred seventy-three thousand, one hundred eighteen".