3405220 has 48 divisors (see below), whose sum is σ = 8805888. Its totient is φ = 1077120.

The previous prime is 3405217. The next prime is 3405247. The reversal of 3405220 is 225043.

It is a junction number, because it is equal to n+sod(n) for n = 3405194 and 3405203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 885 + ... + 2755.

It is an arithmetic number, because the mean of its divisors is an integer number (183456).

Almost surely, 2^3405220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3405220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4402944).

3405220 is an abundant number, since it is smaller than the sum of its proper divisors (5400668).

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

3405220 is a wasteful number, since it uses less digits than its factorization.

3405220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3405220 is about 1845.3238198213. The cubic root of 3405220 is about 150.4463740541.

The spelling of 3405220 in words is "three million, four hundred five thousand, two hundred twenty".