8845242640 has 80 divisors (see below), whose sum is σ = 22170174768. Its totient is φ = 3262537728.

The previous prime is 8845242629. The next prime is 8845242671. The reversal of 8845242640 is 462425488.

It can be written as a sum of positive squares in 8 ways, for example, as 3225616 + 8842017024 = 1796^2 + 94032^2 .

It is a tau number, because it is divible by the number of its divisors (80).

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, 1137004 + ... + 1144756.

Almost surely, 2^8845242640 is an apocalyptic number.

8845242640 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 8845242640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11085087384).

8845242640 is an abundant number, since it is smaller than the sum of its proper divisors (13324932128).

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

8845242640 is a wasteful number, since it uses less digits than its factorization.

8845242640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8876 (or 8870 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 43.

The square root of 8845242640 is about 94049.1501290682. The cubic root of 8845242640 is about 2068.0922967236.

The spelling of 8845242640 in words is "eight billion, eight hundred forty-five million, two hundred forty-two thousand, six hundred forty".