85185378 has 16 divisors (see below), whose sum is σ = 189300960. Its totient is φ = 28395108.

The previous prime is 85185349. The next prime is 85185391. The reversal of 85185378 is 87358158.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788700 + ... + 788807.

It is an arithmetic number, because the mean of its divisors is an integer number (11831310).

Almost surely, 2^85185378 is an apocalyptic number.

85185378 is an abundant number, since it is smaller than the sum of its proper divisors (104115582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85185378 is a wasteful number, since it uses less digits than its factorization.

85185378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577518 (or 1577512 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 85185378 is about 9229.5925153822. The cubic root of 85185378 is about 440.0023725767.

The spelling of 85185378 in words is "eighty-five million, one hundred eighty-five thousand, three hundred seventy-eight".