85173838 has 16 divisors (see below), whose sum is σ = 128894976. Its totient is φ = 42211000.

The previous prime is 85173821. The next prime is 85173887. The reversal of 85173838 is 83837158.

It is a junction number, because it is equal to n+sod(n) for n = 85173794 and 85173803.

It is a congruent 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, 192045 + ... + 192487.

It is an arithmetic number, because the mean of its divisors is an integer number (8055936).

Almost surely, 2^85173838 is an apocalyptic number.

85173838 is a deficient number, since it is larger than the sum of its proper divisors (43721138).

85173838 is a wasteful number, since it uses less digits than its factorization.

85173838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079.

The product of its digits is 161280, while the sum is 43.

The square root of 85173838 is about 9228.9673311807. The cubic root of 85173838 is about 439.9825027477.

The spelling of 85173838 in words is "eighty-five million, one hundred seventy-three thousand, eight hundred thirty-eight".