71481186 has 48 divisors (see below), whose sum is σ = 177473088. Its totient is φ = 20368800.

The previous prime is 71481149. The next prime is 71481197. The reversal of 71481186 is 68118417.

It is a self number, because there is not a number n which added to its sum of digits gives 71481186.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86656 + ... + 87476.

It is an arithmetic number, because the mean of its divisors is an integer number (3697356).

Almost surely, 2^71481186 is an apocalyptic number.

71481186 is an abundant number, since it is smaller than the sum of its proper divisors (105991902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71481186 is a wasteful number, since it uses less digits than its factorization.

71481186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527 (or 1524 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 71481186 is about 8454.6546943089. The cubic root of 71481186 is about 415.0151172700.

The spelling of 71481186 in words is "seventy-one million, four hundred eighty-one thousand, one hundred eighty-six".