3128630 has 8 divisors (see below), whose sum is σ = 5631552. Its totient is φ = 1251448.

The previous prime is 3128623. The next prime is 3128633. The reversal of 3128630 is 368213.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3128596 and 3128605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128633) 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, 156422 + ... + 156441.

It is an arithmetic number, because the mean of its divisors is an integer number (703944).

Almost surely, 2^3128630 is an apocalyptic number.

3128630 is a deficient number, since it is larger than the sum of its proper divisors (2502922).

3128630 is a wasteful number, since it uses less digits than its factorization.

3128630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312870.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 3128630 is about 1768.7933740265. The cubic root of 3128630 is about 146.2574739892.

The spelling of 3128630 in words is "three million, one hundred twenty-eight thousand, six hundred thirty".