71582380 has 12 divisors (see below), whose sum is σ = 150323040. Its totient is φ = 28632944.

The previous prime is 71582377. The next prime is 71582387. The reversal of 71582380 is 8328517.

It is not an unprimeable number, because it can be changed into a prime (71582387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1789540 + ... + 1789579.

It is an arithmetic number, because the mean of its divisors is an integer number (12526920).

Almost surely, 2^71582380 is an apocalyptic number.

It is an amenable number.

71582380 is an abundant number, since it is smaller than the sum of its proper divisors (78740660).

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

71582380 is a wasteful number, since it uses less digits than its factorization.

71582380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579128 (or 3579126 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 71582380 is about 8460.6370918507. The cubic root of 71582380 is about 415.2108668542.

The spelling of 71582380 in words is "seventy-one million, five hundred eighty-two thousand, three hundred eighty".