85385378 has 16 divisors (see below), whose sum is σ = 138082560. Its totient is φ = 39365136.

The previous prime is 85385371. The next prime is 85385389. The reversal of 85385378 is 87358358.

It is not an unprimeable number, because it can be changed into a prime (85385371) 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, 44801 + ... + 46667.

It is an arithmetic number, because the mean of its divisors is an integer number (8630160).

Almost surely, 2^85385378 is an apocalyptic number.

85385378 is a deficient number, since it is larger than the sum of its proper divisors (52697182).

85385378 is a wasteful number, since it uses less digits than its factorization.

85385378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641.

The product of its digits is 806400, while the sum is 47.

The square root of 85385378 is about 9240.4208778605. The cubic root of 85385378 is about 440.3464523413.

The spelling of 85385378 in words is "eighty-five million, three hundred eighty-five thousand, three hundred seventy-eight".