2878600778 has 8 divisors (see below), whose sum is σ = 4329002340. Its totient is φ = 1435600000.

The previous prime is 2878600763. The next prime is 2878600787. The reversal of 2878600778 is 8770068782.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2875855129 + 2745649 = 53627^2 + 1657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 1849223 + ... + 1850778.

Almost surely, 2^2878600778 is an apocalyptic number.

2878600778 is a deficient number, since it is larger than the sum of its proper divisors (1450401562).

2878600778 is a wasteful number, since it uses less digits than its factorization.

2878600778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700392.

The product of its (nonzero) digits is 2107392, while the sum is 53.

The square root of 2878600778 is about 53652.5933949143. The cubic root of 2878600778 is about 1422.5268732047.

The spelling of 2878600778 in words is "two billion, eight hundred seventy-eight million, six hundred thousand, seven hundred seventy-eight".