634428508 has 24 divisors (see below), whose sum is σ = 1343496672. Its totient is φ = 255903744.

The previous prime is 634428499. The next prime is 634428581. The reversal of 634428508 is 805824436.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665941 + ... + 666892.

It is an arithmetic number, because the mean of its divisors is an integer number (55979028).

Almost surely, 2^634428508 is an apocalyptic number.

634428508 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

634428508 is an abundant number, since it is smaller than the sum of its proper divisors (709068164).

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

634428508 is a wasteful number, since it uses less digits than its factorization.

634428508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332861 (or 1332859 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 634428508 is about 25187.8643000950. The cubic root of 634428508 is about 859.2658725087.

The spelling of 634428508 in words is "six hundred thirty-four million, four hundred twenty-eight thousand, five hundred eight".