71534418 has 16 divisors (see below), whose sum is σ = 145768896. Its totient is φ = 23394800.

The previous prime is 71534399. The next prime is 71534429. The reversal of 71534418 is 81443517.

It is a Curzon 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, 112158 + ... + 112793.

It is an arithmetic number, because the mean of its divisors is an integer number (9110556).

Almost surely, 2^71534418 is an apocalyptic number.

71534418 is an abundant number, since it is smaller than the sum of its proper divisors (74234478).

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

71534418 is a wasteful number, since it uses less digits than its factorization.

71534418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225009.

The product of its digits is 13440, while the sum is 33.

The square root of 71534418 is about 8457.8021967885. The cubic root of 71534418 is about 415.1181122175.

Subtracting 71534418 from its reverse (81443517), we obtain a palindrome (9909099).

The spelling of 71534418 in words is "seventy-one million, five hundred thirty-four thousand, four hundred eighteen".