634120 has 32 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 249280.

The previous prime is 634103. The next prime is 634141. The reversal of 634120 is 21436.

It is a junction number, because it is equal to n+sod(n) for n = 634094 and 634103.

It is an unprimeable number.

634120 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3225 + ... + 3415.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁶³⁴¹²⁰ 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 634120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

634120 is an abundant number, since it is smaller than the sum of its proper divisors (817400).

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

634120 is a wasteful number, since it uses less digits than its factorization.

634120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 634120 is about 796.3165199844. The cubic root of 634120 is about 85.9126569512.

Adding to 634120 its reverse (21436), we get a palindrome (655556).

It can be divided in two parts, 63 and 4120, that multiplied together give a triangular number (259560 = T₇₂₀).

The spelling of 634120 in words is "six hundred thirty-four thousand, one hundred twenty".