71166380 has 24 divisors (see below), whose sum is σ = 150208800. Its totient is φ = 28321920.

The previous prime is 71166367. The next prime is 71166391. The reversal of 71166380 is 8366117.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4961 + ... + 12920.

It is an arithmetic number, because the mean of its divisors is an integer number (6258700).

Almost surely, 2^71166380 is an apocalyptic number.

It is an amenable number.

71166380 is an abundant number, since it is smaller than the sum of its proper divisors (79042420).

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

71166380 is a wasteful number, since it uses less digits than its factorization.

71166380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18089 (or 18087 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 71166380 is about 8436.0168326053. The cubic root of 71166380 is about 414.4049729704.

The spelling of 71166380 in words is "seventy-one million, one hundred sixty-six thousand, three hundred eighty".