850503780 has 144 divisors (see below), whose sum is σ = 3078109440. Its totient is φ = 194394816.

The previous prime is 850503767. The next prime is 850503827. The reversal of 850503780 is 87305058.

It is a happy number.

850503780 is a `hidden beast` number, since 85 + 0 + 503 + 78 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10389 + ... + 42531.

It is an arithmetic number, because the mean of its divisors is an integer number (21375760).

Almost surely, 2^850503780 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 850503780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1539054720).

850503780 is an abundant number, since it is smaller than the sum of its proper divisors (2227605660).

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

850503780 is a wasteful number, since it uses less digits than its factorization.

850503780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32175 (or 32160 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 850503780 is about 29163.3979501703. The cubic root of 850503780 is about 947.4553432818.

The spelling of 850503780 in words is "eight hundred fifty million, five hundred three thousand, seven hundred eighty".