3129328 has 20 divisors (see below), whose sum is σ = 6113448. Its totient is φ = 1551680.

The previous prime is 3129323. The next prime is 3129383. The reversal of 3129328 is 8239213.

It is a junction number, because it is equal to n+sod(n) for n = 3129296 and 3129305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129323) 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, 1350 + ... + 2842.

Almost surely, 2^3129328 is an apocalyptic number.

It is an amenable number.

3129328 is a deficient number, since it is larger than the sum of its proper divisors (2984120).

3129328 is a wasteful number, since it uses less digits than its factorization.

3129328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632 (or 1626 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 3129328 is about 1768.9906726718. The cubic root of 3129328 is about 146.2683499025.

The spelling of 3129328 in words is "three million, one hundred twenty-nine thousand, three hundred twenty-eight".