3220380 has 36 divisors (see below), whose sum is σ = 9769032. Its totient is φ = 858720.

The previous prime is 3220351. The next prime is 3220381. The reversal of 3220380 is 830223.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8766 + ... + 9125.

It is an arithmetic number, because the mean of its divisors is an integer number (271362).

Almost surely, 2^3220380 is an apocalyptic number.

3220380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3220380 is an abundant number, since it is smaller than the sum of its proper divisors (6548652).

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

3220380 is a wasteful number, since it uses less digits than its factorization.

3220380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17906 (or 17901 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3220380 is about 1794.5417242293. The cubic root of 3220380 is about 147.6734338362.

It can be divided in two parts, 3220 and 380, that added together give a square (3600 = 60²).

The spelling of 3220380 in words is "three million, two hundred twenty thousand, three hundred eighty".