678389152 has 24 divisors (see below), whose sum is σ = 1526376096. Its totient is φ = 290738112.

The previous prime is 678389149. The next prime is 678389171. The reversal of 678389152 is 251983876.

It is a junction number, because it is equal to n+sod(n) for n = 678389096 and 678389105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514038 + ... + 1514485.

It is an arithmetic number, because the mean of its divisors is an integer number (63599004).

Almost surely, 2^678389152 is an apocalyptic number.

It is an amenable number.

678389152 is an abundant number, since it is smaller than the sum of its proper divisors (847986944).

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

678389152 is a wasteful number, since it uses less digits than its factorization.

678389152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028540 (or 3028532 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 678389152 is about 26045.9047068824. The cubic root of 678389152 is about 878.6710104789.

The spelling of 678389152 in words is "six hundred seventy-eight million, three hundred eighty-nine thousand, one hundred fifty-two".