2439220 has 72 divisors (see below), whose sum is σ = 6320160. Its totient is φ = 786240.

The previous prime is 2439197. The next prime is 2439221. The reversal of 2439220 is 229342.

It is a junction number, because it is equal to n+sod(n) for n = 2439191 and 2439200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18555 + ... + 18685.

It is an arithmetic number, because the mean of its divisors is an integer number (87780).

2^2439220 is an apocalyptic number.

2439220 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 2439220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3160080).

2439220 is an abundant number, since it is smaller than the sum of its proper divisors (3880940).

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

2439220 is a wasteful number, since it uses less digits than its factorization.

2439220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2439220 is about 1561.8002433090. The cubic root of 2439220 is about 134.6119629900.

The spelling of 2439220 in words is "two million, four hundred thirty-nine thousand, two hundred twenty".