989632000 has 240 divisors, whose sum is σ = 2881520928. Its totient is φ = 332083200.

The previous prime is 989631977. The next prime is 989632001. The reversal of 989632000 is 236989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989632001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21055977 + ... + 21056023.

Almost surely, 2^989632000 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 989632000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440760464).

989632000 is an abundant number, since it is smaller than the sum of its proper divisors (1891888928).

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

989632000 is an frugal number, since it uses more digits than its factorization.

989632000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 989632000 is about 31458.4169976812. The cubic root of 989632000 is about 996.5319867878.

Adding to 989632000 its reverse (236989), we get a palindrome (989868989).

The spelling of 989632000 in words is "nine hundred eighty-nine million, six hundred thirty-two thousand".