71397418 has 8 divisors (see below), whose sum is σ = 109374912. Its totient is φ = 34939116.

The previous prime is 71397409. The next prime is 71397439. The reversal of 71397418 is 81479317.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379680 + ... + 379867.

It is an arithmetic number, because the mean of its divisors is an integer number (13671864).

Almost surely, 2^71397418 is an apocalyptic number.

71397418 is a deficient number, since it is larger than the sum of its proper divisors (37977494).

71397418 is a wasteful number, since it uses less digits than its factorization.

71397418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759596.

The product of its digits is 42336, while the sum is 40.

The square root of 71397418 is about 8449.6992845900. The cubic root of 71397418 is about 414.8529367142.

The spelling of 71397418 in words is "seventy-one million, three hundred ninety-seven thousand, four hundred eighteen".