82220786 has 16 divisors (see below), whose sum is σ = 124869600. Its totient is φ = 40601088.

The previous prime is 82220783. The next prime is 82220797. The reversal of 82220786 is 68702228.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82220783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57650 + ... + 59058.

It is an arithmetic number, because the mean of its divisors is an integer number (7804350).

Almost surely, 2^82220786 is an apocalyptic number.

82220786 is a deficient number, since it is larger than the sum of its proper divisors (42648814).

82220786 is a wasteful number, since it uses less digits than its factorization.

82220786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 82220786 is about 9067.5678106094. The cubic root of 82220786 is about 434.8377181249.

The spelling of 82220786 in words is "eighty-two million, two hundred twenty thousand, seven hundred eighty-six".