3147428678 has 4 divisors (see below), whose sum is σ = 4721143020. Its totient is φ = 1573714338.

The previous prime is 3147428639. The next prime is 3147428693. The reversal of 3147428678 is 8768247413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8768247413 = 41 ⋅213859693.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786857168 + ... + 786857171.

It is an arithmetic number, because the mean of its divisors is an integer number (1180285755).

Almost surely, 2^3147428678 is an apocalyptic number.

3147428678 is a deficient number, since it is larger than the sum of its proper divisors (1573714342).

3147428678 is a wasteful number, since it uses less digits than its factorization.

3147428678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573714341.

The product of its digits is 1806336, while the sum is 50.

The square root of 3147428678 is about 56101.9489679280. The cubic root of 3147428678 is about 1465.4982332355.

The spelling of 3147428678 in words is "three billion, one hundred forty-seven million, four hundred twenty-eight thousand, six hundred seventy-eight".