8780245128 has 108 divisors (see below), whose sum is σ = 24753706965. Its totient is φ = 2919592512.

The previous prime is 8780245099. The next prime is 8780245139. The reversal of 8780245128 is 8215420878.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 6852859524 + 1927385604 = 82782^2 + 43902^2 .

It is a tau number, because it is divible by the number of its divisors (108).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=66258.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 21467388 + ... + 21467796.

Almost surely, 2^8780245128 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 8780245128

8780245128 is an abundant number, since it is smaller than the sum of its proper divisors (15973461837).

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

8780245128 is an frugal number, since it uses more digits than its factorization.

8780245128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 8780245128 is about 93702.9622157165. The cubic root of 8780245128 is about 2063.0141824150.

The spelling of 8780245128 in words is "eight billion, seven hundred eighty million, two hundred forty-five thousand, one hundred twenty-eight".