634420108 has 48 divisors (see below), whose sum is σ = 1366731520. Its totient is φ = 251584704.

The previous prime is 634420103. The next prime is 634420121. The reversal of 634420108 is 801024436.

634420108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (634420103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9010 + ... + 36742.

Almost surely, 2^634420108 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 634420108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683365760).

634420108 is an abundant number, since it is smaller than the sum of its proper divisors (732311412).

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

634420108 is a wasteful number, since it uses less digits than its factorization.

634420108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27806 (or 27804 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 634420108 is about 25187.6975525751. The cubic root of 634420108 is about 859.2620801900.

The spelling of 634420108 in words is "six hundred thirty-four million, four hundred twenty thousand, one hundred eight".