28678457324 has 36 divisors (see below), whose sum is σ = 56447490792. Its totient is φ = 12732498240.

The previous prime is 28678457293. The next prime is 28678457333. The reversal of 28678457324 is 42375487682.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28678457324.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668177 + ... + 709800.

Almost surely, 2^28678457324 is an apocalyptic number.

It is an amenable number.

28678457324 is a deficient number, since it is larger than the sum of its proper divisors (27769033468).

28678457324 is a wasteful number, since it uses less digits than its factorization.

28678457324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378046 (or 1378033 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 56.

The spelling of 28678457324 in words is "twenty-eight billion, six hundred seventy-eight million, four hundred fifty-seven thousand, three hundred twenty-four".