71084378 has 8 divisors (see below), whose sum is σ = 112898772. Its totient is φ = 33451456.

The previous prime is 71084371. The next prime is 71084381. The reversal of 71084378 is 87348017.

It can be written as a sum of positive squares in 2 ways, for example, as 70778569 + 305809 = 8413^2 + 553^2 .

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

It is not an unprimeable number, because it can be changed into a prime (71084371) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1045325 + ... + 1045392.

Almost surely, 2^71084378 is an apocalyptic number.

71084378 is a deficient number, since it is larger than the sum of its proper divisors (41814394).

71084378 is a wasteful number, since it uses less digits than its factorization.

71084378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090736.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 71084378 is about 8431.1551996153. The cubic root of 71084378 is about 414.2457447086.

The spelling of 71084378 in words is "seventy-one million, eighty-four thousand, three hundred seventy-eight".