634228908 has 12 divisors (see below), whose sum is σ = 1479867480. Its totient is φ = 211409632.

The previous prime is 634228807. The next prime is 634228909. The reversal of 634228908 is 809822436.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 634228908.

It is not an unprimeable number, because it can be changed into a prime (634228909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26426193 + ... + 26426216.

It is an arithmetic number, because the mean of its divisors is an integer number (123322290).

Almost surely, 2^634228908 is an apocalyptic number.

It is an amenable number.

634228908 is an abundant number, since it is smaller than the sum of its proper divisors (845638572).

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

634228908 is a wasteful number, since it uses less digits than its factorization.

634228908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52852416 (or 52852414 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 634228908 is about 25183.9017628325. The cubic root of 634228908 is about 859.1757507400.

The spelling of 634228908 in words is "six hundred thirty-four million, two hundred twenty-eight thousand, nine hundred eight".