85133830 has 16 divisors (see below), whose sum is σ = 153412560. Its totient is φ = 34015392.

The previous prime is 85133803. The next prime is 85133849. The reversal of 85133830 is 3833158.

It is a junction number, because it is equal to n+sod(n) for n = 85133792 and 85133801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5701 + ... + 14239.

It is an arithmetic number, because the mean of its divisors is an integer number (9588285).

Almost surely, 2^85133830 is an apocalyptic number.

85133830 is a deficient number, since it is larger than the sum of its proper divisors (68278730).

85133830 is a wasteful number, since it uses less digits than its factorization.

85133830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9543.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 85133830 is about 9226.7995534746. The cubic root of 85133830 is about 439.9136021822.

Adding to 85133830 its reverse (3833158), we get a palindrome (88966988).

The spelling of 85133830 in words is "eighty-five million, one hundred thirty-three thousand, eight hundred thirty".