71980328 has 32 divisors (see below), whose sum is σ = 154776960. Its totient is φ = 30742080.

The previous prime is 71980313. The next prime is 71980331. The reversal of 71980328 is 82308917.

It is a junction number, because it is equal to n+sod(n) for n = 71980291 and 71980300.

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, 15350 + ... + 19482.

It is an arithmetic number, because the mean of its divisors is an integer number (4836780).

Almost surely, 2^71980328 is an apocalyptic number.

It is an amenable number.

71980328 is an abundant number, since it is smaller than the sum of its proper divisors (82796632).

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

71980328 is a wasteful number, since it uses less digits than its factorization.

71980328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457 (or 4453 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 71980328 is about 8484.1221113324. The cubic root of 71980328 is about 415.9788728176.

The spelling of 71980328 in words is "seventy-one million, nine hundred eighty thousand, three hundred twenty-eight".