634031120 has 20 divisors (see below), whose sum is σ = 1474122540. Its totient is φ = 253612416.

The previous prime is 634031077. The next prime is 634031129. The reversal of 634031120 is 21130436.

It can be written as a sum of positive squares in 2 ways, for example, as 90022144 + 544008976 = 9488^2 + 23324^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×634031120² = 803990922256908800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 634031092 and 634031101.

It is not an unprimeable number, because it can be changed into a prime (634031129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3962615 + ... + 3962774.

It is an arithmetic number, because the mean of its divisors is an integer number (73706127).

Almost surely, 2^634031120 is an apocalyptic number.

It is an amenable number.

634031120 is an abundant number, since it is smaller than the sum of its proper divisors (840091420).

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

634031120 is a wasteful number, since it uses less digits than its factorization.

634031120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7925402 (or 7925396 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 634031120 is about 25179.9745829896. The cubic root of 634031120 is about 859.0864284573.

Adding to 634031120 its reverse (21130436), we get a palindrome (655161556).

The spelling of 634031120 in words is "six hundred thirty-four million, thirty-one thousand, one hundred twenty".