2989630008 has 72 divisors (see below), whose sum is σ = 8232564600. Its totient is φ = 980118720.

The previous prime is 2989629977. The next prime is 2989630009. The reversal of 2989630008 is 8000369892.

2989630008 is a `hidden beast` number, since 2 + 9 + 8 + 9 + 630 + 0 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2989630009) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 262333 + ... + 273491.

It is an arithmetic number, because the mean of its divisors is an integer number (114341175).

Almost surely, 2^2989630008 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 2989630008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4116282300).

2989630008 is an abundant number, since it is smaller than the sum of its proper divisors (5242934592).

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

2989630008 is a wasteful number, since it uses less digits than its factorization.

2989630008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11293 (or 11225 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2989630008 is about 54677.5091605314. The cubic root of 2989630008 is about 1440.5858611483.

The spelling of 2989630008 in words is "two billion, nine hundred eighty-nine million, six hundred thirty thousand, eight".