82047980 has 24 divisors (see below), whose sum is σ = 196915488. Its totient is φ = 28130688.

The previous prime is 82047941. The next prime is 82047991. The reversal of 82047980 is 8974028.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292889 + ... + 293168.

It is an arithmetic number, because the mean of its divisors is an integer number (8204812).

Almost surely, 2^82047980 is an apocalyptic number.

It is an amenable number.

82047980 is an abundant number, since it is smaller than the sum of its proper divisors (114867508).

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

82047980 is a wasteful number, since it uses less digits than its factorization.

82047980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586073 (or 586071 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 82047980 is about 9058.0340030274. The cubic root of 82047980 is about 434.5328671049.

The spelling of 82047980 in words is "eighty-two million, forty-seven thousand, nine hundred eighty".