3128660 has 24 divisors (see below), whose sum is σ = 6604416. Its totient is φ = 1244960.

The previous prime is 3128659. The next prime is 3128687. The reversal of 3128660 is 668213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5969 + ... + 6471.

It is an arithmetic number, because the mean of its divisors is an integer number (275184).

Almost surely, 2^3128660 is an apocalyptic number.

It is an amenable number.

3128660 is an abundant number, since it is smaller than the sum of its proper divisors (3475756).

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

3128660 is a wasteful number, since it uses less digits than its factorization.

3128660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3128660 is about 1768.8018543636. The cubic root of 3128660 is about 146.2579414686.

The spelling of 3128660 in words is "three million, one hundred twenty-eight thousand, six hundred sixty".