634190740 has 48 divisors (see below), whose sum is σ = 1431763200. Its totient is φ = 235204992.

The previous prime is 634190737. The next prime is 634190741. The reversal of 634190740 is 47091436.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 634190696 and 634190705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634190741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106 + ... + 35614.

It is an arithmetic number, because the mean of its divisors is an integer number (29828400).

Almost surely, 2^634190740 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 634190740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715881600).

634190740 is an abundant number, since it is smaller than the sum of its proper divisors (797572460).

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

634190740 is a wasteful number, since it uses less digits than its factorization.

634190740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35584 (or 35582 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 634190740 is about 25183.1439657561. The cubic root of 634190740 is about 859.1585152816.

The spelling of 634190740 in words is "six hundred thirty-four million, one hundred ninety thousand, seven hundred forty".