71438318 has 32 divisors (see below), whose sum is σ = 132850368. Its totient is φ = 28108800.

The previous prime is 71438293. The next prime is 71438327. The reversal of 71438318 is 81383417.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6098 + ... + 13418.

It is an arithmetic number, because the mean of its divisors is an integer number (4151574).

Almost surely, 2^71438318 is an apocalyptic number.

71438318 is a deficient number, since it is larger than the sum of its proper divisors (61412050).

71438318 is a wasteful number, since it uses less digits than its factorization.

71438318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7388.

The product of its digits is 16128, while the sum is 35.

The square root of 71438318 is about 8452.1191425583. The cubic root of 71438318 is about 414.9321377398.

The spelling of 71438318 in words is "seventy-one million, four hundred thirty-eight thousand, three hundred eighteen".