634342920 has 32 divisors (see below), whose sum is σ = 1903029120. Its totient is φ = 169158080.

The previous prime is 634342889. The next prime is 634342927. The reversal of 634342920 is 29243436.

It is not an unprimeable number, because it can be changed into a prime (634342927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2642976 + ... + 2643215.

It is an arithmetic number, because the mean of its divisors is an integer number (59469660).

Almost surely, 2^634342920 is an apocalyptic number.

634342920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

634342920 is an abundant number, since it is smaller than the sum of its proper divisors (1268686200).

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

634342920 is a wasteful number, since it uses less digits than its factorization.

634342920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286205 (or 5286201 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 634342920 is about 25186.1652499939. The cubic root of 634342920 is about 859.2272308262.

The spelling of 634342920 in words is "six hundred thirty-four million, three hundred forty-two thousand, nine hundred twenty".