2798947678 has 8 divisors (see below), whose sum is σ = 4198724568. Its totient is φ = 1399372824.

The previous prime is 2798947667. The next prime is 2798947687. The reversal of 2798947678 is 8767498972.

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

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 3 ways as a sum of consecutive naturals, for example, 9076 + ... + 75367.

It is an arithmetic number, because the mean of its divisors is an integer number (524840571).

Almost surely, 2^2798947678 is an apocalyptic number.

2798947678 is a deficient number, since it is larger than the sum of its proper divisors (1399776890).

2798947678 is a wasteful number, since it uses less digits than its factorization.

2798947678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101018.

The product of its digits is 85349376, while the sum is 67.

The square root of 2798947678 is about 52905.0817785967. The cubic root of 2798947678 is about 1409.2831522048.

The spelling of 2798947678 in words is "two billion, seven hundred ninety-eight million, nine hundred forty-seven thousand, six hundred seventy-eight".