85220422 has 16 divisors (see below), whose sum is σ = 154686240. Its totient is φ = 34374528.

The previous prime is 85220413. The next prime is 85220423. The reversal of 85220422 is 22402258.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85220423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178797 + ... + 179272.

It is an arithmetic number, because the mean of its divisors is an integer number (9667890).

Almost surely, 2^85220422 is an apocalyptic number.

85220422 is a deficient number, since it is larger than the sum of its proper divisors (69465818).

85220422 is a wasteful number, since it uses less digits than its factorization.

85220422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358095.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 85220422 is about 9231.4907788504. The cubic root of 85220422 is about 440.0627011196.

The spelling of 85220422 in words is "eighty-five million, two hundred twenty thousand, four hundred twenty-two".