2778025828 has 12 divisors (see below), whose sum is σ = 5147518572. Its totient is φ = 1307306240.

The previous prime is 2778025819. The next prime is 2778025837. The reversal of 2778025828 is 8285208772.

2778025828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2778025819) and next prime (2778025837).

It can be written as a sum of positive squares in 2 ways, for example, as 2410613604 + 367412224 = 49098^2 + 19168^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20426593 + ... + 20426728.

It is an arithmetic number, because the mean of its divisors is an integer number (428959881).

Almost surely, 2^2778025828 is an apocalyptic number.

It is an amenable number.

2778025828 is a deficient number, since it is larger than the sum of its proper divisors (2369492744).

2778025828 is a wasteful number, since it uses less digits than its factorization.

2778025828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40853342 (or 40853340 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 49.

The square root of 2778025828 is about 52706.9808279700. The cubic root of 2778025828 is about 1405.7629503228.

The spelling of 2778025828 in words is "two billion, seven hundred seventy-eight million, twenty-five thousand, eight hundred twenty-eight".