71784056 has 8 divisors (see below), whose sum is σ = 134595120. Its totient is φ = 35892024.

The previous prime is 71784029. The next prime is 71784073. The reversal of 71784056 is 65048717.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×71784056² = 10305901391622272, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 4486496 + ... + 4486511.

It is an arithmetic number, because the mean of its divisors is an integer number (16824390).

Almost surely, 2^71784056 is an apocalyptic number.

It is an amenable number.

71784056 is a deficient number, since it is larger than the sum of its proper divisors (62811064).

71784056 is a wasteful number, since it uses less digits than its factorization.

71784056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8973013 (or 8973009 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 71784056 is about 8472.5471966818. The cubic root of 71784056 is about 415.6004392067.

The spelling of 71784056 in words is "seventy-one million, seven hundred eighty-four thousand, fifty-six".