8992971648 has 256 divisors, whose sum is σ = 27205113600. Its totient is φ = 2923849728.

The previous prime is 8992971607. The next prime is 8992971649. The reversal of 8992971648 is 8461792998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8992971649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30692590 + ... + 30692882.

It is an arithmetic number, because the mean of its divisors is an integer number (106269975).

Almost surely, 2^8992971648 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 8992971648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13602556800).

8992971648 is an abundant number, since it is smaller than the sum of its proper divisors (18212141952).

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

8992971648 is a wasteful number, since it uses less digits than its factorization.

8992971648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 488 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 63.

The square root of 8992971648 is about 94831.2799027831. The cubic root of 8992971648 is about 2079.5422168090.

The spelling of 8992971648 in words is "eight billion, nine hundred ninety-two million, nine hundred seventy-one thousand, six hundred forty-eight".