850780 has 48 divisors (see below), whose sum is σ = 2096640. Its totient is φ = 283968.

The previous prime is 850753. The next prime is 850781. The reversal of 850780 is 87058.

850780 = T₂₂₃ + T₂₂₄ + ... + T₂₅₂.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850781) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8209 + ... + 8311.

It is an arithmetic number, because the mean of its divisors is an integer number (43680).

2⁸⁵⁰⁷⁸⁰ 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 850780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048320).

850780 is an abundant number, since it is smaller than the sum of its proper divisors (1245860).

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

850780 is a wasteful number, since it uses less digits than its factorization.

850780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 850780 is about 922.3773631221. The cubic root of 850780 is about 94.7557901238.

The spelling of 850780 in words is "eight hundred fifty thousand, seven hundred eighty".