2611220 has 24 divisors (see below), whose sum is σ = 5529384. Its totient is φ = 1035776.

The previous prime is 2611211. The next prime is 2611229. The reversal of 2611220 is 221162.

2611220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2611211) and next prime (2611229).

It can be written as a sum of positive squares in 4 ways, for example, as 264196 + 2347024 = 514^2 + 1532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2611195 and 2611204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2611229) 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, 2264 + ... + 3216.

It is an arithmetic number, because the mean of its divisors is an integer number (230391).

2^2611220 is an apocalyptic number.

2611220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2611220 is an abundant number, since it is smaller than the sum of its proper divisors (2918164).

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

2611220 is a wasteful number, since it uses less digits than its factorization.

2611220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2611220 is about 1615.9269785482. The cubic root of 2611220 is about 137.7044012300.

Adding to 2611220 its reverse (221162), we get a palindrome (2832382).

The spelling of 2611220 in words is "two million, six hundred eleven thousand, two hundred twenty".