3452220 has 60 divisors (see below), whose sum is σ = 10834824. Its totient is φ = 920160.

The previous prime is 3452203. The next prime is 3452227. The reversal of 3452220 is 222543.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3452193 and 3452202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3452227) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 555 + ... + 2685.

Almost surely, 2^3452220 is an apocalyptic number.

3452220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3452220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5417412).

3452220 is an abundant number, since it is smaller than the sum of its proper divisors (7382604).

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

3452220 is a wasteful number, since it uses less digits than its factorization.

3452220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152 (or 2141 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 3452220 is about 1858.0150699066. The cubic root of 3452220 is about 151.1353843328.

Adding to 3452220 its reverse (222543), we get a palindrome (3674763).

The spelling of 3452220 in words is "three million, four hundred fifty-two thousand, two hundred twenty".