889790220 has 144 divisors (see below), whose sum is σ = 2973664512. Its totient is φ = 213563520.

The previous prime is 889790191. The next prime is 889790261. The reversal of 889790220 is 22097988.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 201759 + ... + 206121.

It is an arithmetic number, because the mean of its divisors is an integer number (20650448).

Almost surely, 2^889790220 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 889790220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486832256).

889790220 is an abundant number, since it is smaller than the sum of its proper divisors (2083874292).

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

889790220 is a wasteful number, since it uses less digits than its factorization.

889790220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492 (or 4487 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 889790220 is about 29829.3516523574. The cubic root of 889790220 is about 961.8245898570.

The spelling of 889790220 in words is "eight hundred eighty-nine million, seven hundred ninety thousand, two hundred twenty".