8787997428 has 192 divisors, whose sum is σ = 25024462848. Its totient is φ = 2347107840.

The previous prime is 8787997403. The next prime is 8787997433. The reversal of 8787997428 is 8247997878.

8787997428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18980325 + ... + 18980787.

It is an arithmetic number, because the mean of its divisors is an integer number (130335744).

Almost surely, 2^8787997428 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 8787997428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12512231424).

8787997428 is an abundant number, since it is smaller than the sum of its proper divisors (16236465420).

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

8787997428 is a wasteful number, since it uses less digits than its factorization.

8787997428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742 (or 740 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 69.

The square root of 8787997428 is about 93744.3194439002. The cubic root of 8787997428 is about 2063.6211662374.

The spelling of 8787997428 in words is "eight billion, seven hundred eighty-seven million, nine hundred ninety-seven thousand, four hundred twenty-eight".