3011220 has 36 divisors (see below), whose sum is σ = 9134580. Its totient is φ = 802944.

The previous prime is 3011219. The next prime is 3011221. The reversal of 3011220 is 221103.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3011219) and next prime (3011221).

It can be written as a sum of positive squares in 2 ways, for example, as 1527696 + 1483524 = 1236^2 + 1218^2 .

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 (9).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3011221) 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, 8185 + ... + 8544.

Almost surely, 2^3011220 is an apocalyptic number.

3011220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3011220 is an abundant number, since it is smaller than the sum of its proper divisors (6123360).

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

3011220 is a wasteful number, since it uses less digits than its factorization.

3011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16744 (or 16739 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 3011220 is about 1735.2867198247. The cubic root of 3011220 is about 144.4045337905.

Adding to 3011220 its reverse (221103), we get a palindrome (3232323).

It can be divided in two parts, 301 and 1220, that added together give a square (1521 = 39²).

The spelling of 3011220 in words is "three million, eleven thousand, two hundred twenty".