71984198 has 48 divisors (see below), whose sum is σ = 134395200. Its totient is φ = 28585440.

The previous prime is 71984191. The next prime is 71984207. The reversal of 71984198 is 89148917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71984191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70133 + ... + 71151.

It is an arithmetic number, because the mean of its divisors is an integer number (2799900).

Almost surely, 2^71984198 is an apocalyptic number.

71984198 is a deficient number, since it is larger than the sum of its proper divisors (62411002).

71984198 is a wasteful number, since it uses less digits than its factorization.

71984198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077 (or 1064 counting only the distinct ones).

The product of its digits is 145152, while the sum is 47.

The square root of 71984198 is about 8484.3501813633. The cubic root of 71984198 is about 415.9863276756.

The spelling of 71984198 in words is "seventy-one million, nine hundred eighty-four thousand, one hundred ninety-eight".