2646220 has 48 divisors (see below), whose sum is σ = 6054048. Its totient is φ = 967680.

The previous prime is 2646211. The next prime is 2646227. The reversal of 2646220 is 226462.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2646191 and 2646200.

It is not an unprimeable number, because it can be changed into a prime (2646227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14530 + ... + 14710.

It is an arithmetic number, because the mean of its divisors is an integer number (126126).

2^2646220 is an apocalyptic number.

2646220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2646220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3027024).

2646220 is an abundant number, since it is smaller than the sum of its proper divisors (3407828).

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

2646220 is a wasteful number, since it uses less digits than its factorization.

2646220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2646220 is about 1626.7206275203. The cubic root of 2646220 is about 138.3169219737.

The spelling of 2646220 in words is "two million, six hundred forty-six thousand, two hundred twenty".