3421780 has 24 divisors (see below), whose sum is σ = 7418880. Its totient is φ = 1324320.

The previous prime is 3421751. The next prime is 3421793. The reversal of 3421780 is 871243.

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, 2140 + ... + 3379.

It is an arithmetic number, because the mean of its divisors is an integer number (309120).

Almost surely, 2^3421780 is an apocalyptic number.

It is an amenable number.

3421780 is an abundant number, since it is smaller than the sum of its proper divisors (3997100).

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

3421780 is a wasteful number, since it uses less digits than its factorization.

3421780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559 (or 5557 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 3421780 is about 1849.8053951700. The cubic root of 3421780 is about 150.6898594660.

The spelling of 3421780 in words is "three million, four hundred twenty-one thousand, seven hundred eighty".