634789320 has 128 divisors (see below), whose sum is σ = 2093921280. Its totient is φ = 152672000.

The previous prime is 634789313. The next prime is 634789339. The reversal of 634789320 is 23987436.

634789320 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 31 ways as a sum of consecutive naturals, for example, 171085 + ... + 174755.

It is an arithmetic number, because the mean of its divisors is an integer number (16358760).

Almost surely, 2^634789320 is an apocalyptic number.

634789320 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 634789320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1046960640).

634789320 is an abundant number, since it is smaller than the sum of its proper divisors (1459131960).

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

634789320 is a wasteful number, since it uses less digits than its factorization.

634789320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827 (or 3823 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 634789320 is about 25195.0256995305. The cubic root of 634789320 is about 859.4287354521.

The spelling of 634789320 in words is "six hundred thirty-four million, seven hundred eighty-nine thousand, three hundred twenty".