630138 has 8 divisors (see below), whose sum is σ = 1260288. Its totient is φ = 210044.

The previous prime is 630127. The next prime is 630151. The reversal of 630138 is 831036.

It is a sphenic number, since it is the product of 3 distinct primes.

630138 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

630138 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 3 ways as a sum of consecutive naturals, for example, 52506 + ... + 52517.

It is an arithmetic number, because the mean of its divisors is an integer number (157536).

2⁶³⁰¹³⁸ is an apocalyptic number.

630138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

630138 is a wasteful number, since it uses less digits than its factorization.

630138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105028.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 630138 is about 793.8123203881. The cubic root of 630138 is about 85.7324477387.

The spelling of 630138 in words is "six hundred thirty thousand, one hundred thirty-eight".