2788128854 has 16 divisors (see below), whose sum is σ = 4782764448. Its totient is φ = 1194133632.

The previous prime is 2788128841. The next prime is 2788128883. The reversal of 2788128854 is 4588218872.

It is a junction number, because it is equal to n+sod(n) for n = 2788128796 and 2788128805.

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 7 ways as a sum of consecutive naturals, for example, 42377 + ... + 85860.

It is an arithmetic number, because the mean of its divisors is an integer number (298922778).

Almost surely, 2^2788128854 is an apocalyptic number.

2788128854 is a deficient number, since it is larger than the sum of its proper divisors (1994635594).

2788128854 is a wasteful number, since it uses less digits than its factorization.

2788128854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129799.

The product of its digits is 2293760, while the sum is 53.

The square root of 2788128854 is about 52802.7352889981. The cubic root of 2788128854 is about 1407.4650316108.

The spelling of 2788128854 in words is "two billion, seven hundred eighty-eight million, one hundred twenty-eight thousand, eight hundred fifty-four".