82081212 has 24 divisors (see below), whose sum is σ = 191977296. Its totient is φ = 27295488.

The previous prime is 82081201. The next prime is 82081247. The reversal of 82081212 is 21218028.

It is a congruent number.

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, 2703 + ... + 13094.

It is an arithmetic number, because the mean of its divisors is an integer number (7999054).

Almost surely, 2^82081212 is an apocalyptic number.

It is an amenable number.

82081212 is an abundant number, since it is smaller than the sum of its proper divisors (109896084).

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

82081212 is a wasteful number, since it uses less digits than its factorization.

82081212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16237 (or 16235 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 82081212 is about 9059.8682109620. The cubic root of 82081212 is about 434.5915256568.

The spelling of 82081212 in words is "eighty-two million, eighty-one thousand, two hundred twelve".