71219885 has 48 divisors (see below), whose sum is σ = 104680512. Its totient is φ = 45964800.

The previous prime is 71219881. The next prime is 71219921. The reversal of 71219885 is 58891217.

It is not a de Polignac number, because 71219885 - 2² = 71219881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71219881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 337430 + ... + 337640.

It is an arithmetic number, because the mean of its divisors is an integer number (2180844).

Almost surely, 2^71219885 is an apocalyptic number.

It is an amenable number.

71219885 is a deficient number, since it is larger than the sum of its proper divisors (33460627).

71219885 is a wasteful number, since it uses less digits than its factorization.

71219885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 263 counting only the distinct ones).

The product of its digits is 40320, while the sum is 41.

The square root of 71219885 is about 8439.1874608875. The cubic root of 71219885 is about 414.5088009469.

The spelling of 71219885 in words is "seventy-one million, two hundred nineteen thousand, eight hundred eighty-five".