3015220 has 24 divisors (see below), whose sum is σ = 6819624. Its totient is φ = 1113216.

The previous prime is 3015211. The next prime is 3015247. The reversal of 3015220 is 225103.

It can be written as a sum of positive squares in 4 ways, for example, as 338724 + 2676496 = 582^2 + 1636^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 3015220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5539 + ... + 6058.

It is an arithmetic number, because the mean of its divisors is an integer number (284151).

Almost surely, 2^3015220 is an apocalyptic number.

It is an amenable number.

3015220 is an abundant number, since it is smaller than the sum of its proper divisors (3804404).

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

3015220 is a wasteful number, since it uses less digits than its factorization.

3015220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11619 (or 11617 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 3015220 is about 1736.4388846141. The cubic root of 3015220 is about 144.4684461540.

The spelling of 3015220 in words is "three million, fifteen thousand, two hundred twenty".