678600028 has 12 divisors (see below), whose sum is σ = 1215167800. Its totient is φ = 331409232.

The previous prime is 678600023. The next prime is 678600047. The reversal of 678600028 is 820006876.

678600028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 678600028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678600023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1972503 + ... + 1972846.

Almost surely, 2^678600028 is an apocalyptic number.

It is an amenable number.

678600028 is a deficient number, since it is larger than the sum of its proper divisors (536567772).

678600028 is a wasteful number, since it uses less digits than its factorization.

678600028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945396 (or 3945394 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 678600028 is about 26049.9525527399. The cubic root of 678600028 is about 878.7620454607.

The spelling of 678600028 in words is "six hundred seventy-eight million, six hundred thousand, twenty-eight".