71889086 has 16 divisors (see below), whose sum is σ = 113086800. Its totient is φ = 34227648.

The previous prime is 71889079. The next prime is 71889091. The reversal of 71889086 is 68098817.

It is a self number, because there is not a number n which added to its sum of digits gives 71889086.

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 7 ways as a sum of consecutive naturals, for example, 4256 + ... + 12723.

It is an arithmetic number, because the mean of its divisors is an integer number (7067925).

Almost surely, 2^71889086 is an apocalyptic number.

71889086 is a deficient number, since it is larger than the sum of its proper divisors (41197714).

71889086 is a wasteful number, since it uses less digits than its factorization.

71889086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17083.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 71889086 is about 8478.7431851661. The cubic root of 71889086 is about 415.8030340675.

The spelling of 71889086 in words is "seventy-one million, eight hundred eighty-nine thousand, eighty-six".