82212782 has 16 divisors (see below), whose sum is σ = 130818240. Its totient is φ = 38615808.

The previous prime is 82212773. The next prime is 82212797. The reversal of 82212782 is 28721228.

It is a congruent number.

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, 19019 + ... + 22937.

It is an arithmetic number, because the mean of its divisors is an integer number (8176140).

Almost surely, 2^82212782 is an apocalyptic number.

82212782 is a deficient number, since it is larger than the sum of its proper divisors (48605458).

82212782 is a wasteful number, since it uses less digits than its factorization.

82212782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555.

The product of its digits is 7168, while the sum is 32.

The square root of 82212782 is about 9067.1264466754. The cubic root of 82212782 is about 434.8236075242.

The spelling of 82212782 in words is "eighty-two million, two hundred twelve thousand, seven hundred eighty-two".