678750028 has 24 divisors (see below), whose sum is σ = 1296674064. Its totient is φ = 308313600.

The previous prime is 678750001. The next prime is 678750049. The reversal of 678750028 is 820057876.

It is a happy number.

678750028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73848 + ... + 82528.

It is an arithmetic number, because the mean of its divisors is an integer number (54028086).

Almost surely, 2^678750028 is an apocalyptic number.

It is an amenable number.

678750028 is a deficient number, since it is larger than the sum of its proper divisors (617924036).

678750028 is a wasteful number, since it uses less digits than its factorization.

678750028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10473 (or 10471 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 678750028 is about 26052.8314775957. The cubic root of 678750028 is about 878.8267888492.

The spelling of 678750028 in words is "six hundred seventy-eight million, seven hundred fifty thousand, twenty-eight".