85128382 has 16 divisors (see below), whose sum is σ = 136497312. Its totient is φ = 39719680.

The previous prime is 85128353. The next prime is 85128389. The reversal of 85128382 is 28382158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85128389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20683 + ... + 24454.

It is an arithmetic number, because the mean of its divisors is an integer number (8531082).

Almost surely, 2^85128382 is an apocalyptic number.

85128382 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

85128382 is a deficient number, since it is larger than the sum of its proper divisors (51368930).

85128382 is a wasteful number, since it uses less digits than its factorization.

85128382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45203.

The product of its digits is 30720, while the sum is 37.

The square root of 85128382 is about 9226.5043217895. The cubic root of 85128382 is about 439.9042181319.

The spelling of 85128382 in words is "eighty-five million, one hundred twenty-eight thousand, three hundred eighty-two".