85043980 has 48 divisors (see below), whose sum is σ = 206015040. Its totient is φ = 28885248.

The previous prime is 85043977. The next prime is 85043993. The reversal of 85043980 is 8934058.

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, 12474 + ... + 18046.

It is an arithmetic number, because the mean of its divisors is an integer number (4291980).

Almost surely, 2^85043980 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 85043980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103007520).

85043980 is an abundant number, since it is smaller than the sum of its proper divisors (120971060).

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

85043980 is a wasteful number, since it uses less digits than its factorization.

85043980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5698 (or 5696 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 85043980 is about 9221.9292992302. The cubic root of 85043980 is about 439.7587865207.

The spelling of 85043980 in words is "eighty-five million, forty-three thousand, nine hundred eighty".