3109220 has 12 divisors (see below), whose sum is σ = 6529404. Its totient is φ = 1243680.

The previous prime is 3109213. The next prime is 3109247. The reversal of 3109220 is 229013.

It can be written as a sum of positive squares in 2 ways, for example, as 2390116 + 719104 = 1546^2 + 848^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77711 + ... + 77750.

It is an arithmetic number, because the mean of its divisors is an integer number (544117).

Almost surely, 2^3109220 is an apocalyptic number.

It is an amenable number.

3109220 is an abundant number, since it is smaller than the sum of its proper divisors (3420184).

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

3109220 is a wasteful number, since it uses less digits than its factorization.

3109220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155470 (or 155468 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 3109220 is about 1763.2980462758. The cubic root of 3109220 is about 145.9543862010.

The spelling of 3109220 in words is "three million, one hundred nine thousand, two hundred twenty".