678039120 has 160 divisors (see below), whose sum is σ = 2547872640. Its totient is φ = 164367360.

The previous prime is 678039107. The next prime is 678039121. The reversal of 678039120 is 21930876.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678039121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9492 + ... + 38028.

It is an arithmetic number, because the mean of its divisors is an integer number (15924204).

Almost surely, 2^678039120 is an apocalyptic number.

678039120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678039120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1273936320).

678039120 is an abundant number, since it is smaller than the sum of its proper divisors (1869833520).

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

678039120 is a wasteful number, since it uses less digits than its factorization.

678039120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28570 (or 28558 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 678039120 is about 26039.1843190220. The cubic root of 678039120 is about 878.5198603199.

Adding to 678039120 its reverse (21930876), we get a palindrome (699969996).

The spelling of 678039120 in words is "six hundred seventy-eight million, thirty-nine thousand, one hundred twenty".