82212784 has 20 divisors (see below), whose sum is σ = 159487560. Its totient is φ = 41054720.

The previous prime is 82212773. The next prime is 82212797. The reversal of 82212784 is 48721228.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12099 + ... + 17629.

It is an arithmetic number, because the mean of its divisors is an integer number (7974378).

Almost surely, 2^82212784 is an apocalyptic number.

It is an amenable number.

82212784 is a deficient number, since it is larger than the sum of its proper divisors (77274776).

82212784 is a wasteful number, since it uses less digits than its factorization.

82212784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468 (or 6462 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 82212784 is about 9067.1265569639. The cubic root of 82212784 is about 434.8236110502.

The spelling of 82212784 in words is "eighty-two million, two hundred twelve thousand, seven hundred eighty-four".