71382180 has 24 divisors (see below), whose sum is σ = 199870272. Its totient is φ = 19035232.

The previous prime is 71382173. The next prime is 71382187. The reversal of 71382180 is 8128317.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71382173) and next prime (71382187).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (71382187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594792 + ... + 594911.

It is an arithmetic number, because the mean of its divisors is an integer number (8327928).

Almost surely, 2^71382180 is an apocalyptic number.

It is an amenable number.

71382180 is an abundant number, since it is smaller than the sum of its proper divisors (128488092).

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

71382180 is a wasteful number, since it uses less digits than its factorization.

71382180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189715 (or 1189713 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 71382180 is about 8448.7975475804. The cubic root of 71382180 is about 414.8234212732.

The spelling of 71382180 in words is "seventy-one million, three hundred eighty-two thousand, one hundred eighty".