2778075328 has 28 divisors (see below), whose sum is σ = 6300278992. Its totient is φ = 1190603520.

The previous prime is 2778075319. The next prime is 2778075353. The reversal of 2778075328 is 8235708772.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3100083 + ... + 3100978.

It is an arithmetic number, because the mean of its divisors is an integer number (225009964).

Almost surely, 2^2778075328 is an apocalyptic number.

2778075328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2778075328 is an abundant number, since it is smaller than the sum of its proper divisors (3522203664).

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

2778075328 is an equidigital number, since it uses as much as digits as its factorization.

2778075328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201080 (or 6201070 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 49.

The square root of 2778075328 is about 52707.4504031451. The cubic root of 2778075328 is about 1405.7712997596.

The spelling of 2778075328 in words is "two billion, seven hundred seventy-eight million, seventy-five thousand, three hundred twenty-eight".