85036820 has 48 divisors (see below), whose sum is σ = 197201088. Its totient is φ = 30543360.

The previous prime is 85036817. The next prime is 85036871. The reversal of 85036820 is 2863058.

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 15 ways as a sum of consecutive naturals, for example, 15932 + ... + 20588.

It is an arithmetic number, because the mean of its divisors is an integer number (4108356).

Almost surely, 2^85036820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85036820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98600544).

85036820 is an abundant number, since it is smaller than the sum of its proper divisors (112164268).

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

85036820 is a wasteful number, since it uses less digits than its factorization.

85036820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760 (or 4758 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 85036820 is about 9221.5410859574. The cubic root of 85036820 is about 439.7464448230.

Adding to 85036820 its reverse (2863058), we get a palindrome (87899878).

The spelling of 85036820 in words is "eighty-five million, thirty-six thousand, eight hundred twenty".