678028992 has 112 divisors (see below), whose sum is σ = 1833871872. Its totient is φ = 221045760.

The previous prime is 678028987. The next prime is 678029057. The reversal of 678028992 is 299820876.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2501817 + ... + 2502087.

It is an arithmetic number, because the mean of its divisors is an integer number (16373856).

Almost surely, 2^678028992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678028992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916935936).

678028992 is an abundant number, since it is smaller than the sum of its proper divisors (1155842880).

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

678028992 is a wasteful number, since it uses less digits than its factorization.

678028992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 678028992 is about 26038.9898421579. The cubic root of 678028992 is about 878.5154860917.

The spelling of 678028992 in words is "six hundred seventy-eight million, twenty-eight thousand, nine hundred ninety-two".