634840224 has 24 divisors (see below), whose sum is σ = 1666455840. Its totient is φ = 211613376.

The previous prime is 634840223. The next prime is 634840243. The reversal of 634840224 is 422048436.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×634840224² = 806044220016740352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634840223) 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, 3306364 + ... + 3306555.

It is an arithmetic number, because the mean of its divisors is an integer number (69435660).

Almost surely, 2^634840224 is an apocalyptic number.

It is an amenable number.

634840224 is an abundant number, since it is smaller than the sum of its proper divisors (1031615616).

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

634840224 is a wasteful number, since it uses less digits than its factorization.

634840224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6612932 (or 6612924 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 634840224 is about 25196.0358786854. The cubic root of 634840224 is about 859.4517074784.

The spelling of 634840224 in words is "six hundred thirty-four million, eight hundred forty thousand, two hundred twenty-four".