71193894 has 8 divisors (see below), whose sum is σ = 142387800. Its totient is φ = 23731296.

The previous prime is 71193851. The next prime is 71193919. The reversal of 71193894 is 49839117.

It is a happy number.

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

71193894 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 5932819 + ... + 5932830.

It is an arithmetic number, because the mean of its divisors is an integer number (17798475).

Almost surely, 2^71193894 is an apocalyptic number.

71193894 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.

71193894 is a wasteful number, since it uses less digits than its factorization.

71193894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11865654.

The product of its digits is 54432, while the sum is 42.

The square root of 71193894 is about 8437.6474209343. The cubic root of 71193894 is about 414.4583711685.

The spelling of 71193894 in words is "seventy-one million, one hundred ninety-three thousand, eight hundred ninety-four".