71918898 has 32 divisors (see below), whose sum is σ = 152832960. Its totient is φ = 22518720.

The previous prime is 71918893. The next prime is 71918911. The reversal of 71918898 is 89881917.

It is a self number, because there is not a number n which added to its sum of digits gives 71918898.

It is not an unprimeable number, because it can be changed into a prime (71918893) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 853 + ... + 12023.

It is an arithmetic number, because the mean of its divisors is an integer number (4776030).

Almost surely, 2^71918898 is an apocalyptic number.

71918898 is an abundant number, since it is smaller than the sum of its proper divisors (80914062).

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

71918898 is a wasteful number, since it uses less digits than its factorization.

71918898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11242.

The product of its digits is 290304, while the sum is 51.

The square root of 71918898 is about 8480.5010465184. The cubic root of 71918898 is about 415.8605031848.

The spelling of 71918898 in words is "seventy-one million, nine hundred eighteen thousand, eight hundred ninety-eight".