985906020 has 96 divisors (see below), whose sum is σ = 3108704256. Its totient is φ = 231292800.

The previous prime is 985906013. The next prime is 985906037. The reversal of 985906020 is 20609589.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 985906020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3634 + ... + 44553.

It is an arithmetic number, because the mean of its divisors is an integer number (32382336).

Almost surely, 2^985906020 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 985906020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1554352128).

985906020 is an abundant number, since it is smaller than the sum of its proper divisors (2122798236).

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

985906020 is a wasteful number, since it uses less digits than its factorization.

985906020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48241 (or 48239 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 985906020 is about 31399.1404340947. The cubic root of 985906020 is about 995.2797610678.

The spelling of 985906020 in words is "nine hundred eighty-five million, nine hundred six thousand, twenty".