989032576 has 128 divisors (see below), whose sum is σ = 2339798400. Its totient is φ = 407666688.

The previous prime is 989032573. The next prime is 989032601. The reversal of 989032576 is 675230989.

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

It is not an unprimeable number, because it can be changed into a prime (989032573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2801616 + ... + 2801968.

It is an arithmetic number, because the mean of its divisors is an integer number (18279675).

Almost surely, 2^989032576 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 989032576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169899200).

989032576 is an abundant number, since it is smaller than the sum of its proper divisors (1350765824).

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

989032576 is a wasteful number, since it uses less digits than its factorization.

989032576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 989032576 is about 31448.8883110357. Note that the first 3 decimals coincide. The cubic root of 989032576 is about 996.3307450349.

The spelling of 989032576 in words is "nine hundred eighty-nine million, thirty-two thousand, five hundred seventy-six".