678400030 has 64 divisors (see below), whose sum is σ = 1544002560. Its totient is φ = 208454400.

The previous prime is 678400027. The next prime is 678400031. The reversal of 678400030 is 30004876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678400031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48466 + ... + 60874.

It is an arithmetic number, because the mean of its divisors is an integer number (24125040).

Almost surely, 2^678400030 is an apocalyptic number.

678400030 is an abundant number, since it is smaller than the sum of its proper divisors (865602530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678400030 is a wasteful number, since it uses less digits than its factorization.

678400030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12505.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 678400030 is about 26046.1135296612. The cubic root of 678400030 is about 878.6757069633.

The spelling of 678400030 in words is "six hundred seventy-eight million, four hundred thousand, thirty".