85033820 has 12 divisors (see below), whose sum is σ = 178571064. Its totient is φ = 34013520.

The previous prime is 85033811. The next prime is 85033841. The reversal of 85033820 is 2833058.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125826 + ... + 2125865.

It is an arithmetic number, because the mean of its divisors is an integer number (14880922).

Almost surely, 2^85033820 is an apocalyptic number.

It is an amenable number.

85033820 is an abundant number, since it is smaller than the sum of its proper divisors (93537244).

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

85033820 is a wasteful number, since it uses less digits than its factorization.

85033820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251700 (or 4251698 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 85033820 is about 9221.3784219063. The cubic root of 85033820 is about 439.7412735147.

Adding to 85033820 its reverse (2833058), we get a palindrome (87866878).

The spelling of 85033820 in words is "eighty-five million, thirty-three thousand, eight hundred twenty".