8987657920 has 112 divisors (see below), whose sum is σ = 22840980480. Its totient is φ = 3356688384.

The previous prime is 8987657909. The next prime is 8987657933. The reversal of 8987657920 is 297567898.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684376 + ... + 697384.

Almost surely, 2^8987657920 is an apocalyptic number.

8987657920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8987657920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11420490240).

8987657920 is an abundant number, since it is smaller than the sum of its proper divisors (13853322560).

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

8987657920 is a wasteful number, since it uses less digits than its factorization.

8987657920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13170 (or 13160 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 61.

The square root of 8987657920 is about 94803.2590157111. The cubic root of 8987657920 is about 2079.1325524894.

The spelling of 8987657920 in words is "eight billion, nine hundred eighty-seven million, six hundred fifty-seven thousand, nine hundred twenty".