2798620128 has 144 divisors (see below), whose sum is σ = 8332964640. Its totient is φ = 889270272.

The previous prime is 2798620103. The next prime is 2798620141. The reversal of 2798620128 is 8210268972.

2798620128 is a `hidden beast` number, since 2 + 7 + 9 + 8 + 620 + 12 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 2708700 + ... + 2709732.

It is an arithmetic number, because the mean of its divisors is an integer number (57867810).

Almost surely, 2^2798620128 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 2798620128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4166482320).

2798620128 is an abundant number, since it is smaller than the sum of its proper divisors (5534344512).

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

2798620128 is a wasteful number, since it uses less digits than its factorization.

2798620128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1470 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 2798620128 is about 52901.9860496749. The cubic root of 2798620128 is about 1409.2281757449.

The spelling of 2798620128 in words is "two billion, seven hundred ninety-eight million, six hundred twenty thousand, one hundred twenty-eight".