3404220 has 24 divisors (see below), whose sum is σ = 9531984. Its totient is φ = 907776.

The previous prime is 3404213. The next prime is 3404221. The reversal of 3404220 is 224043.

3404220 = 272² + 273² + ... + 311².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3404220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3404221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28309 + ... + 28428.

It is an arithmetic number, because the mean of its divisors is an integer number (397166).

Almost surely, 2^3404220 is an apocalyptic number.

3404220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3404220 is an abundant number, since it is smaller than the sum of its proper divisors (6127764).

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

3404220 is a wasteful number, since it uses less digits than its factorization.

3404220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56749 (or 56747 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 3404220 is about 1845.0528447717. The cubic root of 3404220 is about 150.4316455781.

Adding to 3404220 its reverse (224043), we get a palindrome (3628263).

It can be divided in two parts, 340 and 4220, that added together give a triangular number (4560 = T₉₅).

The spelling of 3404220 in words is "three million, four hundred four thousand, two hundred twenty".