3005220 has 24 divisors (see below), whose sum is σ = 8414784. Its totient is φ = 801376.

The previous prime is 3005213. The next prime is 3005221. The reversal of 3005220 is 225003.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 3005196 and 3005205.

It is not an unprimeable number, because it can be changed into a prime (3005221) 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, 24984 + ... + 25103.

It is an arithmetic number, because the mean of its divisors is an integer number (350616).

Almost surely, 2^3005220 is an apocalyptic number.

3005220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3005220 is an abundant number, since it is smaller than the sum of its proper divisors (5409564).

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

3005220 is a wasteful number, since it uses less digits than its factorization.

3005220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50099 (or 50097 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 3005220 is about 1733.5570368465. The cubic root of 3005220 is about 144.3085590354.

The spelling of 3005220 in words is "three million, five thousand, two hundred twenty".