850863720 has 128 divisors (see below), whose sum is σ = 2924605440. Its totient is φ = 193992960.

The previous prime is 850863707. The next prime is 850863751. The reversal of 850863720 is 27368058.

850863720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411409 + ... + 413471.

It is an arithmetic number, because the mean of its divisors is an integer number (22848480).

Almost surely, 2^850863720 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 850863720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1462302720).

850863720 is an abundant number, since it is smaller than the sum of its proper divisors (2073741720).

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

850863720 is a wasteful number, since it uses less digits than its factorization.

850863720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575 (or 2571 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 850863720 is about 29169.5683889906. The cubic root of 850863720 is about 947.5889813236.

The spelling of 850863720 in words is "eight hundred fifty million, eight hundred sixty-three thousand, seven hundred twenty".