8720028794880 has 1200 divisors, whose sum is σ = 33992024873400. Its totient is φ = 2146468626432.

The previous prime is 8720028794819. The next prime is 8720028794899. The reversal of 8720028794880 is 884978200278.

8720028794880 is a `hidden beast` number, since 8 + 72 + 0 + 0 + 2 + 87 + 9 + 488 + 0 = 666.

It is a super-2 number, since 2×8720028794880² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 670771445754 + ... + 670771445766.

Almost surely, 2^{8720028794880} is an apocalyptic number.

8720028794880 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 8720028794880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16996012436700).

8720028794880 is an abundant number, since it is smaller than the sum of its proper divisors (25271996078520).

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

8720028794880 is an frugal number, since it uses more digits than its factorization.

8720028794880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 63.

The spelling of 8720028794880 in words is "eight trillion, seven hundred twenty billion, twenty-eight million, seven hundred ninety-four thousand, eight hundred eighty".