71385438 has 8 divisors (see below), whose sum is σ = 142770888. Its totient is φ = 23795144.

The previous prime is 71385421. The next prime is 71385439. The reversal of 71385438 is 83458317.

It is a sphenic number, since it is the product of 3 distinct primes.

71385438 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 71385396 and 71385405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71385439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5948781 + ... + 5948792.

It is an arithmetic number, because the mean of its divisors is an integer number (17846361).

Almost surely, 2^71385438 is an apocalyptic number.

71385438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71385438 is a wasteful number, since it uses less digits than its factorization.

71385438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11897578.

The product of its digits is 80640, while the sum is 39.

The square root of 71385438 is about 8448.9903538825. The cubic root of 71385438 is about 414.8297322514.

The spelling of 71385438 in words is "seventy-one million, three hundred eighty-five thousand, four hundred thirty-eight".