71863478 has 8 divisors (see below), whose sum is σ = 107831520. Its totient is φ = 35919640.

The previous prime is 71863469. The next prime is 71863499. The reversal of 71863478 is 87436817.

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

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 7028 + ... + 13896.

It is an arithmetic number, because the mean of its divisors is an integer number (13478940).

Almost surely, 2^71863478 is an apocalyptic number.

71863478 is a deficient number, since it is larger than the sum of its proper divisors (35968042).

71863478 is a wasteful number, since it uses less digits than its factorization.

71863478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12102.

The product of its digits is 225792, while the sum is 44.

The square root of 71863478 is about 8477.2329211837. The cubic root of 71863478 is about 415.7536563884.

The spelling of 71863478 in words is "seventy-one million, eight hundred sixty-three thousand, four hundred seventy-eight".