850218880 has 128 divisors (see below), whose sum is σ = 2338476480. Its totient is φ = 289554432.

The previous prime is 850218797. The next prime is 850218911. The reversal of 850218880 is 88812058.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 774492 + ... + 775588.

Almost surely, 2^850218880 is an apocalyptic number.

850218880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 850218880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169238240).

850218880 is an abundant number, since it is smaller than the sum of its proper divisors (1488257600).

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

850218880 is a wasteful number, since it uses less digits than its factorization.

850218880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 40.

The square root of 850218880 is about 29158.5129936353. The cubic root of 850218880 is about 947.3495392555.

The spelling of 850218880 in words is "eight hundred fifty million, two hundred eighteen thousand, eight hundred eighty".