71969180 has 12 divisors (see below), whose sum is σ = 151135320. Its totient is φ = 28787664.

The previous prime is 71969179. The next prime is 71969201. The reversal of 71969180 is 8196917.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1799210 + ... + 1799249.

It is an arithmetic number, because the mean of its divisors is an integer number (12594610).

Almost surely, 2^71969180 is an apocalyptic number.

It is an amenable number.

71969180 is an abundant number, since it is smaller than the sum of its proper divisors (79166140).

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

71969180 is a wasteful number, since it uses less digits than its factorization.

71969180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598468 (or 3598466 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 71969180 is about 8483.4650939342. The cubic root of 71969180 is about 415.9573967096.

The spelling of 71969180 in words is "seventy-one million, nine hundred sixty-nine thousand, one hundred eighty".