8012620840 has 256 divisors, whose sum is σ = 22255718400. Its totient is φ = 2538086400.

The previous prime is 8012620813. The next prime is 8012620879. The reversal of 8012620840 is 480262108.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 19590556 + ... + 19590964.

It is an arithmetic number, because the mean of its divisors is an integer number (86936400).

Almost surely, 2^8012620840 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 8012620840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11127859200).

8012620840 is an abundant number, since it is smaller than the sum of its proper divisors (14243097560).

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

8012620840 is a wasteful number, since it uses less digits than its factorization.

8012620840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 8012620840 is about 89513.2439363025. The cubic root of 8012620840 is about 2001.0511840759.

Adding to 8012620840 its reverse (480262108), we get a palindrome (8492882948).

The spelling of 8012620840 in words is "eight billion, twelve million, six hundred twenty thousand, eight hundred forty".