85307128 has 16 divisors (see below), whose sum is σ = 160304760. Its totient is φ = 42559200.

The previous prime is 85307111. The next prime is 85307129. The reversal of 85307128 is 82170358.

It is a junction number, because it is equal to n+sod(n) for n = 85307093 and 85307102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85307129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7878 + ... + 15253.

Almost surely, 2^85307128 is an apocalyptic number.

It is an amenable number.

85307128 is a deficient number, since it is larger than the sum of its proper divisors (74997632).

85307128 is a wasteful number, since it uses less digits than its factorization.

85307128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23598 (or 23594 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 85307128 is about 9236.1857928476. The cubic root of 85307128 is about 440.2118951843.

The spelling of 85307128 in words is "eighty-five million, three hundred seven thousand, one hundred twenty-eight".