889021800 has 216 divisors, whose sum is σ = 3173443650. Its totient is φ = 222996480.

The previous prime is 889021769. The next prime is 889021807. The reversal of 889021800 is 8120988.

It can be written as a sum of positive squares in 9 ways, for example, as 120956004 + 768065796 = 10998^2 + 27714^2 .

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

It is not an unprimeable number, because it can be changed into a prime (889021807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 519346 + ... + 521054.

Almost surely, 2^889021800 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 889021800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1586721825).

889021800 is an abundant number, since it is smaller than the sum of its proper divisors (2284421850).

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

889021800 is a wasteful number, since it uses less digits than its factorization.

889021800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765 (or 1736 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 889021800 is about 29816.4686037767. The cubic root of 889021800 is about 961.5476338981.

The spelling of 889021800 in words is "eight hundred eighty-nine million, twenty-one thousand, eight hundred".